Samsung Galaxy J7 Duo 2018 vs Samsung Galaxy S21
Unofficial preliminary specifications
| Network | |
|---|---|
| Technology | GSM / HSPA / LTE |
| 2G bands | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) |
| 3G bands | HSDPA 850 / 900 / 1900 / 2100 |
| 4G bands | LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800), 40(2300) |
| Speed | HSPA, LTE Cat4 150/50 Mbps |
| GPRS | Yes |
| EDGE | Yes |
| Launch | |
|---|---|
| Announced | Not announced yet |
| Status | Rumored |
| Body | |
|---|---|
| Dimensions | - |
| Weight | - |
| SIM | Single SIM (Micro-SIM) or Dual SIM (Micro-SIM, dual stand-by) |
| Display for Samsung Galaxy J7 Duo 2018 | |
|---|---|
| Type | Super AMOLED capacitive touchscreen, 16M colors |
| Size | 5.5 inches, 83.4 cm2 |
| Resolution | 720 x 1280 pixels, 16:9 ratio (~267 ppi density) |
| Multitouch | Yes |
| Platform | |
|---|---|
| OS | Android 8.0 (Oreo) |
| Chipset | Exynos 7885 Octa |
| CPU | Octa-core (2x2.2 GHz Cortex-A73 & 6x1.6 GHz Cortex-A53) |
| GPU | Mali-G71 |
| Memory | |
|---|---|
| Card slot | microSD, up to 256 GB (dedicated slot) |
| Internal | 32 GB, 2 GB RAM |
| Camera | |
|---|---|
| Primary | Dual: 13 MP + 2 MP, autofocus, LED flash |
| Features | Geo-tagging, touch focus, face detection, panorama, HDR |
| Video | 1080p@30fps |
| Secondary | 5 MP, LED flash |
| Sound | |
|---|---|
| Alert types | Vibration; MP3, WAV ringtones |
| Loudspeaker | Yes |
| 3.5mm jack | Yes |
| Comms | |
|---|---|
| WLAN | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot |
| Bluetooth | 4.1, A2DP |
| GPS | Yes, with A-GPS, GLONASS, BDS |
| Radio | FM radio |
| USB | microUSB 2.0, USB On-The-Go |
| Features | |
|---|---|
| Sensors | Accelerometer, proximity |
| Messaging | SMS(threaded view), MMS, Email, Push Email, IM |
| Browser | HTML5 |
| - ANT+ support - MP4/WMV/H.264 player - MP3/WAV/WMA/eAAC+/FLAC player - Photo/video editor - Document viewer | |
| Battery | |
|---|---|
| Removable Li-Ion 3300 mAh battery | |
| Network | |
|---|---|
| Technology | GSM / CDMA / HSPA / EVDO / LTE / 5G |
| 2G bands | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (Dual SIM model only) |
| CDMA 800 / 1900 & TD-SCDMA | |
| 3G bands | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 |
| CDMA2000 1xEV-DO | |
| 4G bands | LTE |
| 5G bands | SA/NSA/Sub6/mmWave |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A (CA), 5G |
| Launch | |
|---|---|
| Announced | 2021, January 14 |
| Status | Available |
| Body | |
|---|---|
| Dimensions | 151.7 x 71.2 x 7.9 mm (5.97 x 2.80 x 0.31 in) |
| Weight | 169 g (Sub6), 171 g (mmWave) (5.96 oz) |
| Build | Glass front (Gorilla Glass Victus), plastic back, aluminum frame |
| SIM | Single SIM (Nano-SIM and/or eSIM) or Dual SIM (Nano-SIM and/or eSIM, dual stand-by) |
| Samsung Pay (Visa, MasterCard certified) IP68 dust/water resistant (up to 1.5m for 30 mins) | |
| Display for Samsung Galaxy S21 | |
|---|---|
| Type | Dynamic AMOLED 2X, 120Hz, HDR10+, 1300 nits (peak) |
| Size | 6.2 inches, 94.1 cm2 (~87.2% screen-to-body ratio) |
| Resolution | 1080 x 2400 pixels, 20:9 ratio (~421 ppi density) |
| Protection | Corning Gorilla Glass Victus |
| Always-on display | |
| Platform | |
|---|---|
| OS | Android 11, One UI 3.1 |
| Chipset | Exynos 2100 (5 nm) - International Qualcomm SM8350 Snapdragon 888 (5 nm) - USA/China/Korea |
| CPU | Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (1x2.84 GHz Kryo 680 & 3x2.42 GHz Kryo 680 & 4x1.80 GHz Kryo 680 - USA/China/Korea |
| GPU | Mali-G78 MP14 - International Adreno 660 - USA/China/Korea |
| Memory | |
|---|---|
| Card slot | No |
| Internal | 128GB 8GB RAM, 256GB 8GB RAM |
| UFS 3.1 | |
| Main Camera | |
|---|---|
| Triple | 12 MP, f/1.8, 26mm (wide), 1/1.76", 1.8µm, Dual Pixel PDAF, OIS 64 MP, f/2.0, 28mm (telephoto), 1/1.76", 0.8µm, PDAF, OIS, 1.1x optical zoom, 3x hybrid zoom 12 MP, f/2.2, 13mm, 120˚ (ultrawide), 1/2.55" 1.4µm, Super Steady video |
| Features | LED flash, auto-HDR, panorama |
| Video | 8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS |
| Selfie camera | |
|---|---|
| Single | 10 MP, f/2.2, 26mm (wide), 1/3.24", 1.22µm, Dual Pixel PDAF |
| Features | Dual video call, Auto-HDR |
| Video | 4K@30/60fps, 1080p@30fps |
| Sound | |
|---|---|
| Loudspeaker | Yes, with stereo speakers |
| 3.5mm jack | No |
| 32-bit/384kHz audio Tuned by AKG | |
| Comms | |
|---|---|
| WLAN | Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct, hotspot |
| Bluetooth | 5.0, A2DP, LE |
| GPS | Yes, with A-GPS, GLONASS, BDS, GALILEO |
| NFC | Yes |
| Radio | FM radio (Snapdragon model only; market/operator dependent) |
| USB | USB Type-C 3.2, USB On-The-Go |
| Features | |
|---|---|
| Sensors | Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer |
| Samsung DeX, Samsung Wireless DeX (desktop experience support) ANT+ Bixby natural language commands and dictation | |
| Battery | |
|---|---|
| Type | Li-Po 4000 mAh, non-removable |
| Charging | Fast charging 25W USB Power Delivery 3.0 Fast Qi/PMA wireless charging 15W Reverse wireless charging 4.5W |
