Samsung Galaxy J1 (SM-J100) - 4.3-inch Android Smartphone | Samsung
MPN: J1 β End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
Drop-in alternatives for J1 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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| Product Type | Android smartphone |
| Announced | January 2015 |
| Display Size | 4.3 in TFT |
| Screen-to-Body Ratio | 59.8% |
| Chipset | Spreadtrum SC7727S |
| CPU | Dual-core 1.2 GHz ARM Cortex-A7 |
| GPU | ARM Mali-400 MP1 |
| RAM | 512 MB |
| Internal Storage | 4 GB |
| Primary Camera | 5 MP |
| Front Camera | 2 MP |
| Battery Capacity | 1850 mAh |
| Dimensions | 129 x 68.2 x 8.9 mm |
| Weight | 122 g |
| Operating System | Android 4.4.4 KitKat |
| Build | Plastic back and plastic frame |
J1 standard Pin Configuration Guide
Complete pinout information for J1 (standard package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for J1.
Refer to the datasheet for full pin configuration.
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
J1 is suitable for 6 applications: First-Time Smartphone / Budget Communication, Backup / Emergency Handset, Legacy Android App Testing, Educational / Training Device, IoT / Embedded Hobby Reuse, Emerging-Market Prepaid Segments.
First-Time Smartphone / Budget Communication
The Samsung Galaxy J1 was designed for first-time smartphone buyers and price-sensitive users who need calls, SMS, and light browsing. Its 4.3-inch TFT display with roughly 59.8% screen-to-body ratio keeps the 129 x 68.2 x 8.9 mm body compact at 122 g, while the 1850 mAh removable battery allows users to swap spares rather than charge midday - valuable where charging access is intermittent. The Spreadtrum SC7727S with dual-core 1.2 GHz Cortex-A7 CPU handles basic communication apps of the 2015 era, and Android 4.4.4 KitKat provides a simple interface. In this application the J1's value is its low total cost of ownership: 4 GB internal storage plus microSD covers contacts, messages, and offline media, and the Mali-400 MP1 GPU suffices for non-graphical use. Performance consideration: modern web pages and apps exceed the 512 MB RAM quickly, so users should rely on lite app versions.
Recommended
Backup / Emergency Handset
As a secondary or emergency phone, the Samsung Galaxy J1 remains functional for its core mission: reliable voice calls and SMS on a known-good platform. Its removable 1850 mAh battery means a charged spare can be stored long-term and swapped in during outages, unlike modern sealed-battery phones whose cells degrade in-device. The compact 122 g, 8.9 mm-thick body fits a glovebox or emergency kit easily, and the plastic build tolerates rough storage. The 5 MP rear camera provides basic photo documentation capability when the primary phone fails. Performance consideration: because the device no longer receives security updates and cellular networks continue decommissioning older bands (2G/3G sunset varies by region), verify that your carrier still supports the J1's band configuration before relying on it as an emergency device. A factory reset and a fresh battery restore most of its original usability.
Recommended
Legacy Android App Testing
Development and QA teams maintaining legacy Android applications use the Galaxy J1 as a low-end reference device representing the 512 MB RAM / Android 4.4.4 KitKat floor of the installed base. Its Spreadtrum SC7727S SoC (dual-core 1.2 GHz Cortex-A7, Mali-400 MP1 GPU) reproduces the worst-case performance environment: limited memory pressure kills background processes aggressively, and the single-core Mali-400 exposes unoptimized rendering. Testing on the J1 validates that an app's minimum SDK path still installs and runs when modern targetSdkVersion requirements have not yet forced a KitKat cutoff. The 4.3-inch low-density display also tests layout scalability against today's high-resolution screens. Performance consideration: use the microSD slot for test payloads, since the 4 GB internal storage fills quickly with APKs, logs, and build artifacts during regression cycles.
Recommended
Educational / Training Device
The Galaxy J1 serves as an inexpensive, disassemblable training platform for mobile repair courses and electronics education. Its removable back cover and 1850 mAh user-swappable battery let students practice battery replacement, display inspection, and board-level identification without adhesive-heavy modern constructions. The documented architecture - Spreadtrum SC7727S application processor, 512 MB RAM, 4 GB flash, 5 MP/2 MP camera modules - gives instructors concrete component references, and specification sheets from GSMArena and DeviceSpecifications provide verifiable teaching data (129 x 68.2 x 8.9 mm, 122 g). Because units are available cheaply on the secondary market, damage during training carries minimal cost. Performance consideration: as an EOL device, replacement display and battery parts come primarily from aftermarket sources, so courses should also teach authentic-versus-aftermarket part identification as part of the curriculum.
Recommended
IoT / Embedded Hobby Reuse
Hobbyists repurpose retired Galaxy J1 units as embedded display-and-connectivity modules for DIY projects. The 4.3-inch touchscreen provides a ready-made HMI, the Spreadtrum SC7727S platform runs lightweight Android kiosk apps, and Wi-Fi/Bluetooth connectivity enables remote control without additional radios. The 1850 mAh battery supports portable projects such as sensor loggers, photo frames, or door displays, and the microSD slot offers removable data storage. Using an EOL handset avoids consuming a modern phone for a static role, and the compact 122 g / 8.9 mm profile suits wall-mount or handheld enclosures. Performance consideration: Android 4.4.4 limits available development tools (older Android Studio targets and WebView versions), so keep the software stack simple - a full-screen WebView or basic native kiosk launcher is the practical ceiling on 512 MB of RAM.
Recommended
Emerging-Market Prepaid Segments
The Galaxy J1's original target application was the prepaid, price-driven segment in emerging markets, where the dominant purchase criteria are upfront cost, battery life, and durability rather than performance. The 1850 mAh removable battery supports multi-day standby and user-replaceable power - a decisive feature where grid electricity is unreliable. The plastic body withstands daily handling, the dual cameras (5 MP/2 MP) cover social and documentation needs, and the Spreadtrum SC7727S keeps the bill of materials low. Android 4.4.4 with 4 GB storage plus microSD accommodated the messaging, social, and wallet apps of its era. Performance consideration: as networks sunset 2G/3G bands, this use case is transitioning to modern entry-level devices; remaining J1 stock serves only areas and carriers where its band configuration is still supported.
Recommended
Recommended Products Summary
Engineering reference data for J1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | Galaxy J2 | Galaxy J3 |
|---|---|---|---|
| Brand | Samsung Electronics | Samsung Electronics | Samsung Electronics |
| Package / Form Factor | 129 x 68.2 x 8.9 mm candybar phone | [DATA_NEEDED] | [DATA_NEEDED] |
| Display | 4.3 in TFT | [DATA_NEEDED] | [DATA_NEEDED] |
| RAM | 512 MB | [DATA_NEEDED] | [DATA_NEEDED] |
| Chipset | Spreadtrum SC7727S | [DATA_NEEDED] | [DATA_NEEDED] |
| Battery | 1850 mAh | [DATA_NEEDED] | [DATA_NEEDED] |
| Rear Camera | 5 MP | [DATA_NEEDED] | [DATA_NEEDED] |
| Lifecycle Status | EOL | EOL | EOL |
Key Differentiators
- Removable battery design (vs Galaxy J2)
- Compact 4.3-inch form factor (vs Galaxy J3)
- Honest performance trade-off (vs Galaxy J2)
Design Notes
Do not treat 'J1' as an electronic component MPN without verification. In the verified data, J1 resolves to the Samsung Galaxy J1 smartphone (announced January 2015, Spreadtrum SC7727S, 4.3-inch display, 1850 mAh battery). If your BOM intends a component (e.g., a connector designated J1 on a schematic), re-source with the manufacturer part number - schematic reference designators like J1 are not orderable part numbers.
The Galaxy J1 uses a removable 1850 mAh battery (reported as 1859 mAh in some regional listings per Gadgets360). For any continued deployment, budget for battery replacement: lithium-ion cells stored a decade lose substantial capacity. Test runtime before relying on the device, and purchase replacement packs from reputable sources since aftermarket quality varies widely.
Network compatibility is a lifecycle risk, not a hardware fault: the 2015-era radio band configuration may no longer be supported as carriers retire legacy bands. Verify carrier support in your region before deploying J1 units for calls/data. The SC7727S modem cannot be upgraded.
Compliance Information
Compliance data for a 2015 consumer smartphone was not present in the provided verified web data; consult Samsung's original regulatory documentation for the SM-J100.
