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| Phone | Samsung Galaxy A21 | Samsung DoubleTime | Samsung Galaxy Attain 4G |
| Current U.S. Carriers | (none) | (none) | (none) |
| Global Availability | Released | Released | Released |
| Specifications | |||
|---|---|---|---|
| Display Size |
6.5" diag. 20 : 9 |
3.2" diag. 5 : 3 |
3.5" diag. 5 : 3 |
| Display Resolution & Type |
720 x 1600 pixels (~270 ppi) LCD (TFT/TFD) |
320 x 480 pixels (~180 ppi) LCD (TFT/TFD) |
320 x 480 pixels (~165 ppi) LCD (TFT/TFD) |
| Display Refresh | 60 Hz | 60 Hz | 60 Hz |
| Battery | 4,000 mAh | 1,200 mAh | 1,650 mAh |
| Processor | 2 GHz MediaTek Helio P35 (MT6765) | 600 MHz Qualcomm | ? |
| RAM | 3 GB | ? | 512 MB |
| Storage | 32 GB | ? raw hardware | ? raw hardware |
| Main Camera | 16 megapixel | 3 megapixel | 3 megapixel |
| Wide Camera | 8 megapixel | - | - |
| Tele Camera | - | - | - |
| Video Capture | 1080p HD | QVGA (320 x 240) | WVGA / 480p |
| Front Camera | 13 megapixel | - | 1 megapixel |
| Weight |
6.81 oz (193g) |
5.22 oz (148g) |
4.2 oz (119g) |
| Dimensions |
6.61" x 3.02" x 0.32" (168 x 77 x 8.1 mm) |
4.45" x 2.44" x 0.59" (113 x 62 x 15 mm) |
4.57" x 2.38" x 0.46" (116 x 60 x 11.7 mm) |
| Platform / OS | Android | Android | Android |
| Network Bands |
4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 20, 25, 26, 28, 38, 39, 40, 41, 66, 71 WCDMA: 1, 2, 4, 5, 8 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900 |
WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
4G LTE: 2, 4 CDMA: 850, 1700, 1900 |
| Data Technology | LTE (Cat 6) | HSPA 7.2 | LTE (Cat 3) |
| Features | |||
| Fingerprint Reader |
Yes stand-alone |
- | - |
| Flashlight | Yes | - | - |
| Accessibility | |||
| Hearing Aid Compatible |
Yes M4, T3 (mostly tele-coil compatible) |
Yes M3, T3 (mostly tele-coil compatible) |
Yes M4, T3 (mostly tele-coil compatible) |
| TTY/TDD (Digital) | Yes | Yes | Yes |
| Connectivity | |||
| Bluetooth | Yes | Yes | Yes |
| NFC | Yes | - | - |
| USB |
Yes USB Type C |
Yes Micro-USB |
Yes Micro-USB |
| Wi-Fi |
Yes 5 (802.11 a,ac,b,g,n) |
Yes 4 (802.11 b,g,n) |
Yes |
| Input | |||
| Side Keys | Yes | Yes | Yes |
| Text Keyboard, Hardware | - | Yes | - |
| Touch Screen |
Yes Capacitive |
Yes Capacitive |
Yes Capacitive |
| Memory | |||
| Memory Card Slot | Yes | Yes | Yes |
| Music | |||
| Headphone Jack (3.5mm) | Yes | Yes | Yes |
| Photo & Video | |||
| DLNA | - | - | Yes |
| Power | |||
| Fast Charging | Yes | - | - |
| Voice | |||
| HD Voice | Yes | - | - |
| Speaker Phone | Yes | Yes | Yes |
| Samsung Galaxy A21 | Samsung DoubleTime | Samsung Galaxy Attain 4G | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung Galaxy A21 | Samsung DoubleTime | Samsung Galaxy Attain 4G |
