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| Phone | Nokia Lumia 521 / 520 | Samsung SGH-X820 | Samsung SGH-X640 | Motorola Droid X | Samsung Galaxy A71 5G |
| Current U.S. Carriers | (none) | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released | Released |
| Specifications | |||||
|---|---|---|---|---|---|
| Display Size |
4" diag. 5 : 3 |
? | ? |
4.3" diag. 16 : 9 |
6.7" diag. 20 : 9 |
| Display Resolution & Type |
480 x 800 pixels (~233 ppi) LCD (TFT/TFD) |
220 x 176 pixels LCD (TFT/TFD) |
128 x 160 pixels LCD (TFT/TFD) |
480 x 854 pixels (~228 ppi) LCD (TFT/TFD) |
1080 x 2400 pixels (~393 ppi) AMOLED |
| Display Refresh | ? | ? | ? | 60 Hz | 60 Hz |
| Battery | 1,430 mAh | 650 mAh | 800 mAh | 1,540 mAh | 4,500 mAh |
| Processor | 1 GHz Qualcomm Snapdragon S4 MSM8270 | ? | ? | 1 GHz TI OMAP 3630 (ARM Cortex A8) | 2.4 GHz Qualcomm Snapdragon 765 |
| RAM | 512 MB | ? | ? | ? | 6 GB |
| Storage | 8 GB | ? raw hardware | ? raw hardware | 8 GB | 128 GB |
| Main Camera | 5 megapixel | 2 megapixel | Yes | 8 megapixel | 64 megapixel |
| Wide Camera | - | - | - | - | 12 megapixel |
| Tele Camera | - | - | - | - | - |
| Video Capture | 720p HD | ? | - | 720p HD | 4K UHD |
| Front Camera | - | - | - | - | 32 megapixel |
| Weight |
4.39 oz (124g) |
2.33 oz (66g) |
3 oz (85g) |
5.47 oz (155g) |
6.52 oz (185g) |
| Dimensions |
4.72" x 2.52" x 0.39" (120 x 64 x 9.9 mm) |
4.45" x 1.97" x 0.27" (113 x 50 x 6.9 mm) |
3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm) |
5" x 2.6" x 0.4" (127 x 66 x 10.2 mm) |
6.39" x 2.97" x 0.31" (162 x 75 x 7.9 mm) |
| Form Factor | Slab | Slab | Clamshell | Slab | Slab |
| Platform / OS | Windows | (proprietary) | (proprietary) | Android | Android |
| Network Bands |
GSM: 900, 1800, 1900 |
GSM: 900, 1800, 1900 |
CDMA: 850, 1900 |
5G: 2, 5, 41, 66, 71, 260, 261 4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 20, 25, 26, 28, 29, 30, 38, 39, 40, 41, 66, 71 WCDMA: 1, 2, 4, 5 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900 |
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| Data Technology | HSPA+ 21 | EDGE | GPRS | EVDO rA | NR (5G) |
| Features | |||||
| Fingerprint Reader | - | - | - | - |
Yes in-display (optical) |
| Flashlight | - | - | - | - | Yes |
| GPS / Location | n/a | - | - | n/a | n/a |
| Accessibility | |||||
| Hearing Aid Compatible |
Yes M3, T4 (very tele-coil compatible) |
- | - |
Yes M4, T3 (mostly tele-coil compatible) |
Yes M4, T3 (mostly tele-coil compatible) |
| Multiple Languages | n/a | Yes | Yes | n/a | n/a |
| TTY/TDD (Digital) | Yes | - | - | Yes | Yes |
| Connectivity | |||||
| Bluetooth | Yes | Yes | - | Yes | Yes |
| Mobile Hotspot | n/a | - | - | n/a | n/a |
| NFC | - | - | - | - | Yes |
| USB | Yes | Yes | - | Yes |
Yes USB Type C |
| Wi-Fi | Yes | - | - | Yes |
Yes 5 (802.11 a,ac,b,g,n) |
| Contacts | |||||
| Picture ID | n/a | Yes | Yes | n/a | n/a |
| Ringer ID | n/a | Yes | Yes | n/a | n/a |
| Voice Dialing | n/a | - | - | n/a | n/a |
| Customization | |||||
| Custom Graphics | n/a | Yes | Yes | n/a | n/a |
| Custom Ringtones | n/a | Yes | Yes | n/a | n/a |
| Real-Music Ringers | n/a | Yes | - | n/a | n/a |
| Data & Network | |||||
| Data Tethering | n/a | - | - | n/a | n/a |
| External Antenna Jack | n/a | Yes | - | n/a | n/a |
| WAP / Web Browser | n/a | Yes | Yes | n/a | n/a |
| Input | |||||
| Predictive Text Entry | n/a | Yes | Yes | n/a | n/a |
| Side Keys | Yes | Yes | Yes | Yes | Yes |
| Touch Screen |
Yes Capacitive |
- | - |
Yes Capacitive |
Yes Capacitive |
| Memory | |||||
| Memory Card Slot | Yes | - | - | Yes | Yes |
| Messaging | |||||
| Email Client | n/a | Yes | - | n/a | n/a |
| EMS / Picture Messaging | n/a | Yes | Yes | n/a | n/a |
| Instant Messaging | n/a | - | - | n/a | n/a |
| MMS | n/a | Yes | Yes | n/a | n/a |
| Text Messaging Templates | n/a | Yes | Yes | n/a | n/a |
| Music | |||||
| FM Radio | - | - | - | Yes | - |
| Headphone Jack (3.5mm) | Yes | - | - | Yes | Yes |
| Music Player | n/a | - | - | n/a | n/a |
| Photo & Video | |||||
| DLNA | - | - | - | Yes | - |
| TV Output | - | Yes | - | Yes | - |
| Power | |||||
| Fast Charging | - | - | - | - | Yes |
| Productivity | |||||
| Alarm | n/a | Yes | Yes | n/a | n/a |
| Calculator | n/a | Yes | Yes | n/a | n/a |
| Calendar | n/a | Yes | Yes | n/a | n/a |
| To-Do List | n/a | Yes | Yes | n/a | n/a |
| Voice Memo | n/a | Yes | Yes | n/a | n/a |
| Software | |||||
| Games | n/a | Yes | Yes | n/a | n/a |
| Java (J2ME) | n/a | Yes | Yes | n/a | n/a |
| Voice | |||||
| HD Voice | - | - | - | - | Yes |
| Headset Jack (2.5 mm) | n/a | - | Yes | n/a | n/a |
| Speaker Phone | Yes | Yes | Yes | Yes | Yes |
| Nokia Lumia 521 / 520 | Samsung SGH-X820 | Samsung SGH-X640 | Motorola Droid X | Samsung Galaxy A71 5G | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Nokia Lumia 521 / 520 | Samsung SGH-X820 | Samsung SGH-X640 | Motorola Droid X | Samsung Galaxy A71 5G |
