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

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.*

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.*

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 usability and the abundance of business-oriented applications support various operations in different settings. In this column, we will not only introduce the features of each iPad model, recommended accessories, and useful business applications, but also present specific examples of companies that have achieved digital transformation through the use of iPads. *For more detailed content of the column, you can view it through the related links. For more information, please feel free to download the PDF or contact us.*

While the digital transformation (DX) is progressing in factories and construction sites, the use of smartphones and tablets is severely restricted in "explosion-proof areas" such as oil and gas plants and chemical factories. This is due to the risk that sparks and heat can lead to serious accidents. Traditionally, expensive explosion-proof smartphones were the norm, but in recent years, a new option has emerged: "attaching explosion-proof cases to existing iPhones." This column will provide a detailed explanation of the basics of explosion-proof technology, an overview of the standards, and the benefits of implementation. *For more details on the column, please refer to the related links. For more information, feel free to download the PDF or contact us directly.*

We would like to introduce a case study of the implementation of our BPO service "MaruMoba" at Yoshizumi Holdings, where business smartphones are utilized across many departments, from sales and consulting to engineering. Before the implementation, when devices were needed internally, initial setup and accessory preparation were carried out, and the devices were lent to users. When devices were returned by employees who left the company, their condition was checked, and they were initialized and maintained before being stored. Now, returned devices are sent directly to our company, and we have transitioned to a system that handles everything from condition checks to management and redistribution in one go. Inventory status is also visualized in real-time, the area around the cabinets has been organized, and the overall outlook for management tasks has greatly improved. [Challenges] - Checking the condition of returned devices, initializing and maintaining them, and managing storage. - While remote work is the norm, the person in charge continued to come to the office once a week, leading to ongoing demands on their time. *For more details, please download the PDF or feel free to contact us.*

We would like to introduce a case study of the "Comprehensive Mobile Business Support Service (Marumo)" in the energy solutions industry. The company faced challenges as they were overwhelmed with other tasks such as PC, network, and business systems, leaving them unable to manage smartphone-related operations. After implementation, all individual kitting that was previously done in-house was entrusted to us. By shipping directly to users without going through the management department, we were able to shorten delivery times. 【Case Overview】 ■Challenges - Wanted to delegate management tasks and consolidate requests and inquiries - Business operations were being strained ■Effects - Significant reduction in errors - Easier progress and management checks, reducing the burden on the management department *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case study of the "Comprehensive Mobile Business Support Service (Marumo)" in the telecommunications and information communication industry. The company faced challenges such as wanting to manage mobile devices in bulk using a Mobile Device Management (MDM) system, but lacking personnel with the necessary knowledge in-house. After implementation, by using MDM to collectively perform the previously time-consuming device configuration tasks, the delivery time was shortened, and smooth distribution of devices to each employee was achieved. [Case Overview] ■Challenges - Large-scale kitting is difficult - Lack of MDM knowledge is putting pressure on operations ■Effects - Significant reduction in errors - MDM professionals handled the situation, reducing the burden on the management department *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case study of the "Marugoto Mobile Business Support Service (Marumo)" implemented in the welfare equipment and home care support business. The company was considering vendors that could handle everything from device procurement, kitting, MDM operation support, to device storage in a seamless manner. After implementation, our staff, who have extensive expertise, responded to inquiries, enabling quick answers and early resolutions to questions that previously took time to address. [Case Overview] ■ Challenges - Setting up, procuring, and managing business devices ■ Effects - Improvement in internal service levels - Reduction of burden on internal management departments - Workflow applications reduced to one-third of the previous volume *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case study of the "Comprehensive Mobile Business Support Service (Marumo)" and "STJ Fault Support (i) 1 Year" in building comprehensive management. In the company, when a smartphone malfunction occurred, repair requests were made through the internal device management department via the telecommunications provider, but there were challenges such as the time-consuming process. After the implementation, by outsourcing the response contact point for malfunctions to our company, it became possible to handle repair requests from users, arrange for spare devices, and collect malfunctioning equipment in a one-stop manner. 【Case Overview】 ■Challenges - Need to reduce processes - Lack of knowledge about MDM, leading to operational pressure ■Effects - One-stop response - MDM professionals handle the situation, reducing the burden on the management department *For more details, please download the PDF or feel free to contact us.

We would like to introduce case studies of the "Comprehensive Mobile Business Support Service (Marumo)" and "OptimalBiz (MDM)" in the machine processing business. The company contracted an MDM provided by a telecommunications carrier when introducing business terminals, but faced challenges such as lacking the know-how for environmental setup, which limited its utilization. After implementation, by utilizing MDM operation support, they achieved reliable operation with comprehensive support. Tasks that are prone to occur, such as setting and changing management information, can now be completed in-house. [Case Overview] ■Challenges - Difficulties in managing devices - Lack of knowledge about MDM ■Effects - Automation with MDM tools - Support from MDM professionals *For more details, please download the PDF or feel free to contact us.

The "iPhone SE (3rd generation)" offers a smooth user experience with comfortable operability and long battery life, thanks to its fast chip and optimized battery, while supporting advanced features. It has improved drop resistance and effectively protects the device from scratches and scuffs. With splash and dust resistance, you can feel secure even if you spill a drink, supporting your active daily life. 【Features】 ■ Equipped with a super-fast processor ■ Long-lasting operation with a large-capacity battery ■ Supports high-speed communication ■ High-performance camera to vividly capture memories ■ Advanced technology condensed into a compact body *For more details, please download the PDF or feel free to contact us.

We would like to introduce the "iPad 9th Generation for Businesses" that we offer. It features the A13 BIONIC chip, which delivers high processing power and graphic performance, along with a battery life that lasts all day. Additionally, the display is a vibrant 10.2 inches, providing an ideal visual experience for drawing beautiful illustrations, focusing on work, enjoying movies, and any other applications. 【Features】 ■ A13 BIONIC chip ■ 256GB of large storage capacity ■ Wide-angle camera with center frame support ■ Enjoy handwriting and typing freely ■ Expands new experiences wirelessly *For more details, please download the PDF or feel free to contact us.

The "GRATINA" is a standard mobile phone that can be used for a long time in business. When a call ends, the content of the previous call is saved as audio data. You can listen to it again later. Additionally, when changing models, you can transfer the audio data recorded and saved on this product to a new model using a microSD memory card (sold separately). 【Features】 ■ Save and output important call records ■ Various functions to ensure you don't miss incoming calls ■ Clear audio quality ■ Durable for long-term use ■ Security measures with a model that has no camera *For more details, please download the PDF or feel free to contact us.

The "Speed Wi-Fi 5G X01" is a Wi-Fi router that supports a hybrid network of 4G and 5G, compatible with both "Sub6" and "millimeter wave" bands in the 5G frequency range. It has a built-in 2.5GBASE-T wired LAN port, eliminating the need for a cradle. You can utilize high-speed communication in various locations and situations. Additionally, by connecting a business camera to the X01 with a single LAN cable, you can reliably stream 4K video. This ensures that video and audio are delivered to viewers without interruption. 【Features】 ■ 5G-compatible Wi-Fi router ■ Built-in multi-gigabit wired LAN port for experiencing high-speed communication ■ Utilizes Wi-Fi 6 and USB 3.0 (Type-C) to enable various connection methods for 5G *For more details, please download the PDF or feel free to contact us.