Samsung Galaxy J7 duo (SM-J727R4) is a samsung device (codename: sm-j727r4). FirmwareMirror hosts 2 verified firmware builds, covering: USC. Available as official firmware. Last updated: April 2021. All files MD5-verified. Free, no registration.
Find and download official Stock ROM for Samsung Galaxy J7 duo (SM-J727R4) (sm-j727r4). All firmware files include MD5 hash verification and are available for direct download.
| Network | Technology | GSM / HSPA / LTE |
|---|---|---|
| 2G bands | GSM 850 / 900 / 1800 / 1900 | |
| 3G bands | HSDPA 850 / 900 / 1900 / 2100 - International | |
| HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - USA | ||
| 4G bands | 1, 3, 5, 7, 8, 20, 38, 40, 41 - International | |
| 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 28, 38, 40, 41, 66 - USA | ||
| Speed | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps |
| Launch | Announced | 2018, April. Released 2018, April |
|---|---|---|
| Status | Discontinued |
| Body | Dimensions | 153.5 x 77.2 x 8.2 mm (6.04 x 3.04 x 0.32 in) |
|---|---|---|
| Weight | 174 g (6.14 oz) | |
| SIM | Single SIM (Micro-SIM) or Dual SIM (Micro-SIM, dual stand-by) |
| Display | Type | Super AMOLED |
|---|---|---|
| Size | 5.5 inches, 83.4 cm2 (~70.4% screen-to-body ratio) | |
| Resolution | 720 x 1280 pixels, 16:9 ratio (~267 ppi density) |
| Platform | OS | Android 8.0 (Oreo), upgradable to Android 9.0 (Pie) |
|---|---|---|
| Chipset | Exynos 7885 (14 nm) | |
| CPU | Octa-core (2x2.2 GHz Cortex-A73 & 6x1.6 GHz Cortex-A53) | |
| GPU | Mali-G71 |
| Memory | Card slot | microSDXC (dedicated slot) |
|---|---|---|
| Internal | 32GB 3GB RAM, 32GB 4GB RAM | |
| eMMC 5.1 |
| Main Camera | Dual | 13 MP, f/1.9, AF Auxiliary lens |
|---|---|---|
| Features | LED flash, panorama, HDR | |
| Video | 1080p@30fps |
| Selfie camera | Single | 8 MP, f/1.9 |
|---|---|---|
| Features | LED flash | |
| Video | 1080p@30fps |
| Sound | Loudspeaker | Yes |
|---|---|---|
| 3.5mm jack | Yes |
| Comms | WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct |
|---|---|---|
| Bluetooth | 4.2, A2DP, LE | |
| Positioning | GPS, GLONASS, BDS | |
| NFC | No | |
| Radio | FM radio | |
| USB | microUSB 2.0 |
| Features | Sensors | Fingerprint (front-mounted), accelerometer, proximity |
|---|---|---|
| ANT+ |
| Battery | Type | Li-Ion 3000 mAh, removable |
|---|
| Misc | Colors | Black, Gold, Rose Gold, White, Blue |
|---|---|---|
| Models | SM-J720F, SM-J720F/DS, SM-J720M, SM-J720M/DS | |
| SAR EU | 0.54 W/kg (head) 1.40 W/kg (body) | |
| Price | About 240 EUR |
A: Yes — official firmware from the manufacturer is generally safe when you match your device's exact model number and region. Flashing the wrong region or modified firmware can cause issues.
A: Samsung Galaxy J7 duo (SM-J727R4) firmware is flashed using Odin. See the step-by-step guide above for the full procedure.
A: Some devices allow downgrading, others have anti-rollback protection that blocks it. Check the version-specific notes on each ROM page, or your model's community forum, before attempting a downgrade.
A: First, verify the firmware matches your exact model code (e.g. SM-S938B for Samsung, or the CPH-number for OPPO). Reinstall the manufacturer's USB drivers, use a rear USB 2.0 port directly on your PC, and retry. The troubleshooting box above the FAQ covers the most common failure modes.
