Compare Phones
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| Phone | Samsung SGH-X640 | Nubia Red Magic 3 / 3S | Samsung SGH-X820 |
| Current U.S. Carriers | (none) | (none) | (none) |
| Global Availability | Released | Released | Released |
| Specifications | |||
|---|---|---|---|
| Display Size | ? |
6.7" diag. 19.5 : 9 |
? |
| Display Resolution & Type |
128 x 160 pixels LCD (TFT/TFD) |
1080 x 2340 pixels (~388 ppi) AMOLED |
220 x 176 pixels LCD (TFT/TFD) |
| Display Refresh | ? | 90 Hz | ? |
| Battery | 800 mAh | 5,000 mAh | 650 mAh |
| Processor | ? | Qualcomm Snapdragon 855+ | ? |
| RAM | ? | 8 GB * | ? |
| Storage | ? raw hardware | 128 GB * | ? raw hardware |
| Main Camera | Yes | 48 megapixel | 2 megapixel |
| Wide Camera | - | - | - |
| Tele Camera | - | - | - |
| Video Capture | - | 4K UHD | ? |
| Front Camera | - | 16 megapixel | - |
| Weight |
3 oz (85g) |
7.58 oz (215g) |
2.33 oz (66g) |
| Dimensions |
3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm) |
6.76" x 3.09" x 0.38" (172 x 79 x 9.7 mm) |
4.45" x 1.97" x 0.27" (113 x 50 x 6.9 mm) |
| Form Factor | Clamshell | Slab | Slab |
| Platform / OS | (proprietary) | Android | (proprietary) |
| Network Bands |
GSM: 900, 1800, 1900 |
4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 25, 26, 28, 30, 34, 38, 39, 40, 41, 66 WCDMA: 1, 2, 4, 5, 8, 19 CDMA: 850, 1900 GSM: 850, 900, 1800, 1900 |
GSM: 900, 1800, 1900 |
| Data Technology | GPRS | LTE (Cat 9) | EDGE |
| Features | |||
| Fingerprint Reader | - |
Yes stand-alone |
- |
| Flashlight | - | Yes | - |
| Accessibility | |||
| Multiple Languages | Yes | n/a | Yes |
| TTY/TDD (Digital) | - | Yes | - |
| Connectivity | |||
| Bluetooth | - | Yes | Yes |
| USB | - |
Yes USB Type C |
Yes |
| Wi-Fi | - |
Yes 5 (802.11 a,ac,b,g,n) |
- |
| Contacts | |||
| Picture ID | Yes | n/a | Yes |
| Ringer ID | Yes | n/a | Yes |
| Customization | |||
| Custom Graphics | Yes | n/a | Yes |
| Custom Ringtones | Yes | n/a | Yes |
| Real-Music Ringers | - | n/a | Yes |
| Data & Network | |||
| Dual-SIM | - | Yes | - |
| External Antenna Jack | - | n/a | Yes |
| WAP / Web Browser | Yes | n/a | Yes |
| Input | |||
| Predictive Text Entry | Yes | n/a | Yes |
| Side Keys | Yes | Yes | Yes |
| Text Keyboard, Hardware | - | Yes | - |
| Touch Screen | - |
Yes Capacitive |
- |
| Messaging | |||
| Email Client | - | n/a | Yes |
| EMS / Picture Messaging | Yes | n/a | Yes |
| MMS | Yes | n/a | Yes |
| Text Messaging Templates | Yes | n/a | Yes |
| Music | |||
| Headphone Jack (3.5mm) | - | Yes | - |
| Stereo Speakers | - | Yes | - |
| Photo & Video | |||
| TV Output | - | Yes | Yes |
| Power | |||
| Fast Charging | - | Yes | - |
| Productivity | |||
| Alarm | Yes | n/a | Yes |
| Calculator | Yes | n/a | Yes |
| Calendar | Yes | n/a | Yes |
| To-Do List | Yes | n/a | Yes |
| Voice Memo | Yes | n/a | Yes |
| Software | |||
| Games | Yes | n/a | Yes |
| Java (J2ME) | Yes | n/a | Yes |
| Voice | |||
| HD Voice | - | Yes | - |
| Headset Jack (2.5 mm) | Yes | n/a | - |
| Speaker Phone | Yes | Yes | Yes |
| Samsung SGH-X640 | Nubia Red Magic 3 / 3S | Samsung SGH-X820 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung SGH-X640 | Nubia Red Magic 3 / 3S | Samsung SGH-X820 |
