STJグループ（株式会社サンテレコムジャパン、株式会社STJレンテック） List of Products and Services

"Marumo" (Comprehensive Mobile Business Support Service) is a unique BPO service from Santec Telecom Japan. It makes managing corporate mobile phones and smartphones much easier. It provides strong support for security enhancements and in case of loss. We offer operational support for BPO services aimed at corporate mobile phones. Dedicated staff will respond quickly, no matter where you are in the country. [Features] ■ Support via a free call number (incoming calls only) and a dedicated email address ■ Bulk management and operation with dedicated software ■ iOS repairs are also supported ■ Nationwide service ■ Dedicated staff provide consistent support ■ Immediate response for lost devices *For more details, please refer to the PDF document or feel free to contact us.

MDM "OPTiM Biz" is an MDM developed by Optim Corporation and supports multi-device management. MDM (Mobile Device Management) is a system designed to efficiently manage mobile devices such as smartphones and tablets, enhancing security. Implementing MDM in the operation of smart devices within a company is a crucial point for preventing information leaks. 【Features】 ■ No server setup required ■ Centralized management of devices ■ Multi-device support ■ Device lock in case of loss or theft ■ Automatic checks for security violations ■ Restrictions on non-business applications *For more details, please refer to the PDF document or feel free to contact us.

"STJ Fault Support (i) 1 Year" is a corporate mobile phone and smartphone insurance that fully covers repair costs for smartphone accidents such as water damage, breakage, and malfunction. *Devices purchased from Santelecom Japan are eligible for coverage. Repair costs for iOS devices (iPhone, iPad) due to malfunction, breakage, or water damage are covered up to twice a year. With a contract for Santelecom Japan's BPO services, you can rest assured during the repair process. The repaired items will be ready for use immediately upon delivery. 【Features】 ■ Repaired items are returned with kitting ■ Custom repair flow can be established for your company ■ Management is possible even if the contracted communication providers are different ■ Coverage for water damage, breakage, and malfunction *For more details, please refer to the PDF document or feel free to contact us.

"STJ Rental Wi-Fi 100" is a corporate cloud Wi-Fi service that automatically connects to the most suitable network among the three major mobile carriers. It can be used immediately when needed, with the fastest shipping available on the same day after application. Once it arrives, you can start using it right away. Short-term rentals are available from one month, and with our monthly rental options, you can contract for only the necessary period and keep costs down. 【Features】 ■ Always connects, cloud Wi-Fi ■ Automatically connects to the most suitable network among the three major mobile carriers ■ Ideal for spot use, ready to use when needed ■ Rental available from one month ■ Simple and straightforward plan *For more details, please download the PDF or feel free to contact us.

"STJ Rental Wi-Fi" is a rental Wi-Fi service for businesses that supports high-capacity communication. With a simple monthly plan design, it is ideal for short-term use at events and exhibitions. There are no administrative fees or equipment costs, and there are no usage limits based on dates. Thanks to cloud Wi-Fi technology that automatically connects to three carriers (docomo/au/SoftBank), it provides a communication environment suited to the location. Remote work and video streaming can be done smoothly. 【Features of the newly launched BCP plan】 ■ Low price └ 1,000 yen/month for usage up to 1GB └ 1,500 yen/month for usage up to 3GB ■ Provides stable communication with automatic connection to three carriers ■ Immediate use available when needed ★ A no-commitment 100GB plan (4,000 yen/month) is also available! *For more details, please refer to the materials. Feel free to contact us with any inquiries.

The premium internet service provided by "USEN GATE 02" is an ultra-fast internet service with speeds of up to 10Gbps. Unlike shared fiber optics used by multiple users, the premium internet offers a dedicated line service that provides a direct fiber optic connection to each customer, ensuring stable communication. By using a dedicated line, the service is less affected by other users, resulting in stable communication and the ability to create a comfortable internet environment. 【For those with the following concerns】 ■ Haven't reviewed the network in a long time ■ Increased web conferencing compared to before ■ Complaints about slow internet from within the company ■ Recently implemented remote work ■ Actively using cloud services *For more details, please refer to the related links or feel free to contact us.

"KDDI SMART Address Book" is a business-oriented cloud address book service that can be used from smartphones and PCs. It is specifically designed for business use, offering features for administrators such as permission settings, access restrictions, and bulk import functionality for address books. It can be used on PCs and smartphones, allowing users to switch between devices according to their usage scenarios. 【Features】 ■ Address book sharing ■ Comprehensive features to reduce management burden ■ Available on multiple devices *For more details, please refer to the PDF document or feel free to contact us.

"LINE WORKS" is a business chat tool that can be used with peace of mind for work. It allows communication not only among company members but also with clients and customers, and you can communicate with customers who do not use this service via LINE. With a familiar interface and features, anyone can start chatting right away, and with over 1,000 types of rich stickers, feelings can be conveyed even in business. The read confirmation feature allows you to check which members have read or not read the messages. [Features] - Account management is secure - Communication is possible with stickers and short messages - The read feature lets you see who has viewed the messages *For more details, please refer to the PDF document or feel free to contact us.

We would like to introduce the "iPhone 16 Pro for Corporations" that we handle. With an ultra-thin bezel and an expansive display, visibility is clearer than ever, featuring a durable titanium design. Additionally, the battery lasts even longer, allowing for 27 hours of video playback. The emergency SOS and collision detection features, compatible with satellite communication, provide a means to seek help even outside of cellular coverage. 【Features】 ■ Apple Intelligence ■ Smooth camera operation ■ Equipped with A18 Pro chip ■ 4K120fps Dolby Vision ■ 48MP ultra-wide camera *For more details, please download the PDF or feel free to contact us.

We would like to introduce the "iPhone 16 for Businesses" that we offer. Designed for high durability and colorful aesthetics, ensuring long-lasting beauty. Camera operation is simple, allowing for perfect shots with minimal actions. Additionally, the battery has been further enhanced, and with the A18 chip, it achieves overwhelming speed and intelligence. 【Features】 ■ Ultra-wide camera ■ Further enhanced battery ■ Overwhelming speed and intelligence with the A18 chip ■ Instant access to necessary operations with the action button ■ Emergency SOS and collision detection features with satellite communication support *For more details, please download the PDF or feel free to contact us.

Our company offers the 'iPhone 16e' as a corporate mobile phone and smartphone. Designed to make the most of Apple Intelligence, this personal AI provides strong support for tasks such as writing and task efficiency. You can create your own emojis and edit photos freely with the "Cleanup" feature. The body is made from high-strength aluminum material, achieving a tough structure that can withstand daily shocks and accidents. It protects you from everyday little mishaps. 【Features】 ■ Optimized for Apple Intelligence ■ Tough and sophisticated design ■ Industry-leading durability ■ Action button for various operations with one push ■ Versatile USB-C port *For more details, please download the PDF or feel free to contact us.

The "TORQUE G06" is a product with overwhelming durability and a tough body that can handle various scenes. It has undergone drop tests onto a heavily textured knurling that is more uneven than sandpaper, as well as impact tests on the screen using a pointed notch. With a durability that has cleared a record 29 tests in TORQUE history, it expands the range of activities for your business. 【Features】 ■ Robust durability ■ Supports eSIM/Dual SIM ■ Triple camera ■ Accessories (sold separately) that expand business use cases *For more details, please download the PDF or feel free to contact us.

The "Google Pixel 7a" is a business-oriented smartphone that improves speed, efficiency, and security compared to its predecessor, the Google Pixel 6a, by incorporating the Google-designed Google Tensor G2 chip. This chip is also used in the Google Pixel 7 and Google Pixel 7 Pro, and with enhanced AI features, it achieves improvements in call voice quality, extended battery life, and enhanced photo and video quality through blur correction. To protect users and confidential information, Google Pixel provides a minimum of five years of security updates and continuously applies advanced security updates to enhance safety. 【Five Recommended Points】 ■ Intelligence ■ High security features ■ Long-lasting battery ■ Convenient features ■ Environmentally conscious product development *For more details, please download the PDF or feel free to contact us.

The "Galaxy A23 5G" is a simple and comfortable 5G business smartphone that propels your business forward. It features a MediaTek Dimensity 700 CPU (2.2GHz/2 + 2.0GHz/6 = 8 cores). Additionally, it supports external memory with a microSDXC card of up to 1TB, allowing you to store a large amount of data such as on-site photos and meeting recordings. 【Features】 ■ Easy to use ■ "Better safe than sorry" functionality ■ Easily and quickly transfer important data *For more details, please download the PDF or feel free to contact us.

The "DIGNO(R)SX3" is a rugged 5G smartphone equipped with a large-capacity battery. Thanks to the device's heat dissipation technology, it suppresses temperature rise, allowing for comfortable use even during long calls or remote meetings. You can feel secure even when you can't fully charge it during sudden business trips. 【Features】 ■ Long-lasting use with a 4,500mAh large-capacity battery ■ Complies with 20 MIL standards ■ Device management features to meet customer needs ■ Safe management with Android Enterprise Recommended compliance *For more details, please download the PDF or feel free to contact us.

The "DIGNO(R) Tab KYT34" is a durable and convenient business tablet that promotes digital transformation (DX) for companies. It has waterproof ratings of IPX5/IPX8 and dustproof rating of IP6X. It is designed for work in environments such as wet areas, outdoor settings with sudden rain, and factories with a lot of dust. It can be easily wiped clean with alcohol disinfectant wipes, making it hygienic to use. It is ideal for professions and places where cleanliness is important. 【Features】 ■ Durability designed for diverse business uses and locations, with reliable domestic design and production ■ Functionality designed with field use in mind ■ Comprehensive charging solutions ■ Android Enterprise Recommended compliant ■ Device restriction app (Device Control app) specialized for corporate use *For more details, please download the PDF or feel free to contact us.

The "Lenovo Tab M10a 5G" is a 5G-compatible tablet for businesses that features a Snapdragon(TM) 695 CPU. In 5G areas, it enables high-speed communication, making video conferencing and video viewing comfortable. It comes with 4GB of RAM, allowing the simultaneous use of multiple business applications. Additionally, it supports 64GB of ROM storage and is compatible with a 1TB microSDXC(TM) card, enabling the storage of large data volumes. 【Features】 ■ Sturdy dustproof and waterproof design ■ Full HD with narrow bezels ■ Smooth visuals that are easy to see from any angle ■ Reading mode ■ Screen split function and floating mode *For more details, please download the PDF or feel free to contact us.

The "DIGNO Tab2 5G KYT35" is a 5G-compatible tablet that strongly supports business operations. It supports NFC reading and payments without the need for an external reader, and it is equipped with reliable durability and comprehensive business functions for on-site use. Additionally, it supports Dual SIM with both physical SIM and eSIM, allowing multiple networks to be utilized on a single tablet. This enables communication redundancy and can be effectively used as a BCP (Business Continuity Plan) measure. 【Features】 ■ Supports NFC reading and payments without an external reader, all in one device ■ Reliable durability and comprehensive business functions for on-site use ■ Streamlining of management tasks and robust security measures *For more details, please download the PDF or feel free to contact us.

The "Speed Wi-Fi 5G X12" is a pocket-sized WiFi device that supports 5G and Wi-Fi 6, enabling high-speed and stable wireless communication. It is compatible with WPA3, the advanced version of WPA/WPA2, which provides enhanced security measures while maintaining compatibility with WPA2. Additionally, it features a lightweight and easy-to-hold body, equipped with a 4000mAh battery, allowing for approximately 9 hours of continuous communication even while on the go. 【Features】 ■ Supports 5G networks and Wi-Fi 6 ■ Compatible with the advanced Wi-Fi security standard WPA3 ■ Long-lasting battery and lightweight, easy-to-hold body ■ Easy to configure various settings ■ Improved functionality *For more details, please download the PDF or feel free to contact us.

The "GRATINA (KYF44)" is a mobile phone designed for businesses, equipped with high-quality call capabilities and a reliable recording function. If there are two or more missed calls from the same person within 10 minutes, the ringtone will gradually increase in volume, and the vibration duration will be extended. Additionally, without the need for earphones or conversion cables, you can listen to the radio within the broadcast area by simply touching the bottom of the device. This feature allows you to obtain useful information during emergencies, such as disasters. 【Features】 ■ Advanced call functions to ensure you never miss important calls ■ Durable and hygienic, providing comfortable use over time ■ Smart features and peripherals that evolve your work style *For more details, please download the PDF or feel free to contact us.

Santelecom Japan, as a top-class agency in KDDI's Kanto corporate sales division, has dedicated representatives who will provide clear and courteous assistance to first-time customers. A corporate contract refers to applying for a contract under the name of a corporation, such as a joint-stock company or a limited company. Our company offers "special corporate pricing" for all scenarios including "new contracts," "device changes," and "switching from other companies." 【Benefits】 ■ Reduction in communication costs such as calls and internet ■ Increased business efficiency with suitable options and plans ■ Centralized management of employee mobile data ■ Improved employee satisfaction *For more details, please refer to the PDF materials or feel free to contact us.

Smartphones and mobile phones have become indispensable tools in business. However, there are many specialized terms that are emerging, and while we may have a general understanding of their nuances, we often do not know their original meanings. This smartphone glossary mainly picks up and lists terms that you might hesitate to ask someone about or that are not widely recognized. When introducing smartphones, there are several points to consider, such as security measures and app selection. We hope this glossary will assist you in your smartphone adoption and operation. *You can view the detailed content of the article through the related links. For more information, please feel free to contact us.*

We would like to introduce the "Corporate Mobile Phone and Corporate Smartphone Rate Plan List" that we handle. The "Smartphone Start Plan Basic 5G/4G" is a recommended plan for those using a smartphone for the first time, allowing data communication of up to 30GB. In addition, we also offer various plans such as the "Smartphone Start Plan Light 5G/4G," "Unlimited MAX 5G/4G," and "Smartphone Mini Plan 5G/4G." 【Plan Lineup】 ■ Smartphone Start Plan Basic 5G/4G ■ Smartphone Start Plan Light 5G/4G ■ Unlimited MAX 5G/4G ■ Smartphone Mini Plan 5G/4G *For more details, please download the PDF or feel free to contact us.

Points will be awarded based on the monthly usage fees and communication charges of the KDDI fixed communication services for au mobile phones. Corporate contract customers tend to accumulate points easily due to having multiple contracts, but they are often unaware of how many points they have. Upon checking, they usually find that they have accumulated a significant amount. Since corporate contract customers have fewer opportunities to use their points, it is not uncommon for points to expire. *For more details on the column, please refer to the related links. For further inquiries, feel free to contact us.

We would like to introduce our "BPO Services." We solve issues related to mobile phones that contain important customer information, such as "I implemented MDM but can't utilize it effectively" and "I don't know what to do when my smartphone breaks." MDM can be managed collectively by our company. Additionally, in case of a malfunction, we can promptly arrange for smartphones and tablets. Remote locking and unlocking of mobile phones is also possible. 【Scope of Services】 ■ Application reception desk ■ Device arrangement ■ Kitting ■ Inquiries and maintenance ■ Device management ■ After-sales support *For more details, please refer to the PDF document or feel free to contact us.

In recent years, many companies have been introducing corporate smartphones and mobile phones to improve business efficiency and enhance security. However, there are likely many personnel who struggle with the kitting process even after the devices have been introduced. Therefore, this time we will discuss the reasons why kitting for corporate smartphones and mobile phones can be challenging, as well as key points to facilitate a smooth process. *For detailed content of the column, please refer to the related link. For more information, please check the PDF document or feel free to contact us.*

Do you have any concerns about managing business terminals? "Frequent configuration errors" "Spending too much time on inquiries" "Managing terminals is too cumbersome" Suntelecom Japan's original BPO service "MaruMoba" solves all of these issues. In this article, we will provide a detailed introduction on how MaruMoba's features, implementation benefits, and actual success stories can address terminal operation challenges. A must-read for those aiming to improve operational efficiency and promote DX. *For more details, you can view the related links. For further information, please download the PDF or feel free to contact us.*

Recently, many companies have been incorporating BPO and outsourcing as important elements in their management strategies. While the term "BPO" is known, it seems that there are still few people who accurately understand its specific content. In this article, we will explain the overview of BPO in detail, discuss its advantages and disadvantages, and also introduce BPO in the management and operation of company smartphones. *For detailed content of the column, you can view it through the related links. For more information, please refer to the PDF materials or feel free to contact us.*

To efficiently manage and secure mobile devices necessary for business, the MDM solution is recommended. MDM refers to services or software that centrally monitor and manage mobile devices. In this article, we will clearly explain the necessity, functions, and implementation points of MDM. *For detailed content of the column, please refer to the related links. For more information, please check the PDF materials or feel free to contact us.*

This page introduces "Apple Business Manager" (hereinafter referred to as "ABM"), which is essential for managing iOS and iPadOS devices. ABM is a program provided by Apple for businesses that supports the realization of more advanced device management by integrating with the general term "MDM tools," which includes automatic device enrollment and bulk app distribution. There are no costs involved. *For detailed content of the column, you can view it through the related links. For more information, please refer to the PDF materials or feel free to contact us.

MDM (Mobile Device Management) is effective for managing and monitoring corporate smartphones and mobile phones. In addition to device management and security enhancement, MDM has convenient features, among which the "app distribution feature" is very helpful for improving the operational efficiency of corporate smartphones and preventing personal use. In this article, we will explain the "app distribution feature" of MDM and also introduce the convenient feature "App Catalog" of our MDM product, 'OptimalBiz.' *For detailed content of the column, you can view it through the related links. For more information, please refer to the PDF materials or feel free to contact us.

MDM (Mobile Device Management) is effective for managing and monitoring corporate smartphones and mobile phones. This time, we will introduce "Restrictions," which is suitable for managing iOS devices, as one of the main features of MDM. "Restrictions" help unify the operational policies of corporate smartphones, enhance security, and prevent personal use. In this article, we will explain why to use restrictions with MDM and how users can comfortably utilize them. Please be sure to read until the end. *For detailed content of the column, you can view it from the related links. For more information, please feel free to contact us.

In today's business environment, smartphones have become an indispensable presence, and device malfunctions or damage pose a significant risk that can directly lead to business interruptions. The prices of smartphones have been rising year by year, and it is not uncommon for models to exceed 100,000 yen. This article provides a detailed explanation of the necessity and benefits of smartphone insurance for corporations. Additionally, we will introduce recommended insurance services and operational methods, so please be sure to read to the end. *For detailed content of the column, you can view it in PDF format. For more information, please feel free to contact us.*

Recently, there has been an increase in pocket Wi-Fi services using cloud SIM technology. Cloud SIM is a pocket Wi-Fi that allows data communication at low rates over a wide area without the need for a specific carrier's SIM. For those in charge of companies using traditional major carrier pocket Wi-Fi, this may be an unfamiliar service. This time, we will introduce the advantages and disadvantages of cloud Wi-Fi, as well as rental services that can be used at a good price, aimed at those individuals. Please consider this as a reference. *You can view the detailed content of the column through the related links. For more information, please feel free to contact us.

One of the common challenges in the operation of business smartphones is the management, sharing, and backup of contact data. In this article, we will introduce a cloud address book service that allows for easy management, sharing, and backup of contact information for customers and employees registered on smartphones. If you are experiencing challenges in managing and sharing contact information on business smartphones, please consider this as a reference. *For more details on the column, you can view it through the related links. Feel free to contact us for more information.

There are two main types of smartphones. One is the iPhone, which uses iOS, and the other is the Android smartphone, which uses Android OS. When considering implementation, some corporate representatives may wonder, "Which is better for corporate use, iPhone or Android?" Both iPhone and Android have their own features and advantages, but this time I will explain the recommended points of Android smartphones. I will also introduce recommended models for businesses and convenient services, so please use this as a reference. *You can view the detailed content of the column through the related links. For more information, please feel free to contact us.*

Frequent iOS updates occur while using an iPhone. It is important to update to the latest software, but many people have questions like, "What exactly is an update?" and "What happens if I skip an update?" Therefore, this time, in addition to the basics of iPhone updates, we will also explain the impact of skipping updates. *For detailed content of the column, you can view it through the related links. Please feel free to contact us for more information.*

eSIM is a system that allows users to utilize communication carrier services using a digital SIM embedded in devices such as smartphones. It enables online contracts and immediate activation, and it also supports dual SIM functionality, leading to an increase in companies adopting it for corporate contracts. In this column, we will provide a detailed explanation of the basic mechanism of eSIM, its advantages and disadvantages, as well as recommended models for corporate use and integration with Mobile Device Management (MDM). *For more details on the column, please refer to the related links. Feel free to contact us for more information.

Unlike mobile phones, radios (transceivers) that allow for group communication with a single button are invaluable in various situations. Just having a radio enables quick information sharing at any time, and its broadcast capability and immediacy greatly contribute to improving work efficiency. There are various types of radios, but one that has recently gained attention is the IP radio app that utilizes mobile phone network communication areas. In this article, we will introduce the types and features of standard radios, compare standard radios with IP radio apps, highlight the unique features of IP radio apps, provide case studies, and finally present the IP radio apps we offer. *For detailed content of the column, please refer to the related links. For more information, feel free to contact us.*

Many people are preparing for disasters. Communication disruptions are one type of disaster. In this column, we will introduce methods to prepare for communication disruptions, specifically DSDS (Dual SIM Dual Standby) and secondary line services. When a communication disruption occurs suddenly, important data may become impossible to send or receive, and systems may come to a halt. Are you fully prepared for such situations? To prepare for such scenarios, there is a method called communication redundancy. *For more detailed information, please refer to the related links. Feel free to contact us for more details.*

Smartphones are essential items that support business efficiency and communication both inside and outside the company. However, what if important data were to leak externally due to loss or theft? Just imagining it is chilling, isn't it? To reduce such risks, Apple's security feature "Activation Lock" is gaining attention. In fact, this feature is quite useful for managing corporate smartphones. "What exactly is Activation Lock?" "How do you use it?" In this article, we will clearly explain its mechanism, benefits, and how it can be effectively utilized for corporate purposes. *For detailed content of the column, please refer to the related links. For more information, feel free to contact us.*

With the spread of ChatGPT and Copilot, generative AI is transitioning from a "futuristic technology" to an "essential practical tool" for business. Last year, Apple's announcement of Apple Intelligence has made AI a more familiar presence, and its use on business smartphones like the iPhone is also expanding. This article will explain the information leakage risks that companies may overlook when utilizing generative AI, as well as measures to use it safely. We will also introduce specific examples of how our company has implemented ChatGPT, so please refer to them. *For detailed content of the column, you can view it through the related links. For more information, please download the PDF or feel free to contact us.*

Last year, Apple announced the generative AI feature "Apple Intelligence," which became a major topic of discussion. The long-awaited Japanese version has finally arrived in April 2025! It's different from the previous Siri, packed with convenient features that make daily tasks much easier, such as assisting in the creation of text and images. In this article, we will clearly explain how to utilize Apple Intelligence in business settings, along with important points to consider. *For detailed content of the column, please refer to the related links. For more information, feel free to download the PDF or contact us.*

On April 10, 2025, KDDI launched the "au Starlink Direct" communication service, which allows smartphones to connect directly to satellites, through collaboration with SpaceX. As a result, in areas where the sky is visible, it will be possible to exchange messages even in mountainous regions, remote islands, and disaster sites where communication has previously been difficult or temporarily unavailable. In this column, we will delve into the details of "au Starlink Direct," focusing on the basic mechanisms of satellite communication, how to use it on compatible devices, and the setup procedures, all explained in an easy-to-understand manner. *For more details of the column, you can view them through the related links. For further information, please feel free to download the PDF or contact us.

In the era of digital transformation, as companies are required to improve productivity and streamline operations, the iPad is gaining attention as a solution. Not only is it portable, but its excellent operability and the abundance of business-oriented apps support operations in various settings. In this column, we will introduce the features of each iPad model, recommended accessories, and apps that are useful for business. There are also case studies of companies that have achieved digital transformation through the use of iPads, so please read to the end. *For more detailed content of the column, you can view it through the related links. For more information, please download the PDF or feel free to contact us.*