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| Phone | Samsung SPH-Z400 | Sonim XP3plus | Samsung Galaxy S21 |
| Current U.S. Carriers | (none) |
AT&T T-Mobile Verizon |
Verizon |
| Global Availability | Released | Released | Released |
| Specifications | |||
|---|---|---|---|
| Display Size |
1.9" diag. 4 : 3 |
2.8" diag. 4 : 3 |
6.2" diag. 20 : 9 |
| Display Resolution & Type |
176 x 220 pixels (~150 ppi) LCD (TFT/TFD) |
240 x 320 pixels (~143 ppi) LCD (TFT/TFD) |
1080 x 2400 pixels (~424 ppi) AMOLED |
| Display Refresh | ? | 60 Hz | 120 Hz |
| Battery | 1,300 mAh | 2,300 mAh | 4,000 mAh |
| Processor | ? | 2 GHz Qualcomm Snapdragon 662 (SM6115) | 2.8 GHz Qualcomm Snapdragon 888 |
| RAM | ? | 2 GB | 8 GB |
| Storage | ? raw hardware | 16 GB | 128 GB * |
| Main Camera | 1 megapixel | 8 megapixel | 12 megapixel |
| Wide Camera | - | - | 12 megapixel |
| Tele Camera | - | - | 64 megapixel |
| Video Capture | QCIF (176 x 144) | 1080p HD | 8K |
| Front Camera | - | - | 10 megapixel |
| Weight |
4.06 oz (115g) |
7.76 oz (220g) |
6.03 oz (171g) |
| Dimensions |
3.73" x 1.91" x 1" (95 x 49 x 25.4 mm) |
4.57" x 2.36" x 1.1" (116 x 60 x 28 mm) |
5.97" x 2.8" x 0.31" (152 x 71 x 7.9 mm) |
| Form Factor | Clamshell | Clamshell | Slab |
| Platform / OS | (proprietary) | (proprietary) | Android |
| Network Bands |
CDMA: 850, 1900 |
4G LTE: 1, 2, 3, 4, 5, 7, 12, 13, 14, 25, 26, 30, 39, 40, 41, 66, 71 WCDMA: 1, 2, 4, 5 GSM: 850, 900, 1800, 1900 |
5G: 2, 5, 12, 25, 30, 41, 66, 71, 77-C, 260, 261 4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 29, 30, 38, 39, 40, 41, 46, 48, 66, 71 WCDMA: 1, 2, 4, 5, 8 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900 |
| Data Technology | EVDO rA | LTE (Cat 13) | NR (5G) |
| Features | |||
| Barometer | - | Yes | Yes |
| Fingerprint Reader | - | - |
Yes in-display (ultrasonic) |
| Flashlight | - | Yes | Yes |
| GPS / Location | Yes | Yes | n/a |
| Ruggedized | Yes | Yes | - |
| Water-Resistant | - |
Yes IPX8 (SCUBA) |
Yes IPX8 (SCUBA) |
| Accessibility | |||
| Adjustable Text Size | Yes | Yes | n/a |
| Hearing Aid Compatible |
Yes M4 (very compatible) |
Yes M4, T4 (very tele-coil compatible) |
Yes M3, T3 (mostly tele-coil compatible) |
| Multiple Languages | Yes | Yes | n/a |
| TTY/TDD (Digital) | Yes | Yes | Yes |
| Alerts | |||
| Extra Display | Yes | Yes | - |
| Connectivity | |||
| Bluetooth | Yes | Yes | Yes |
| Mobile Hotspot | - | Yes | n/a |
| NFC | - | - | Yes |
| USB | Yes |
Yes USB Type C |
Yes USB Type C |
| Wi-Fi | - |
Yes 5 (802.11 a,ac,b,g,n) |
Yes 6 (802.11 a,ac,ax,b,g,n) |
| Contacts | |||
| Picture ID | Yes | Yes | n/a |
| Ringer ID | Yes | Yes | n/a |
| Voice Dialing | Yes | Yes | n/a |
| Customization | |||
| Custom Graphics | Yes | Yes | n/a |
| Custom Ringtones | Yes | - | n/a |
| Real-Music Ringers | Yes | - | n/a |
| Data & Network | |||
| Data Tethering | Yes | Yes | n/a |
| WAP / Web Browser | Yes | Yes | n/a |
| Input | |||
| Predictive Text Entry | Yes | Yes | n/a |
| Side Keys | Yes | Yes | Yes |
| Touch Screen | - | - |
Yes Capacitive |
| Memory | |||
| Memory Card Slot | - | Yes | - |
| Messaging | |||
| Email Client | Yes | - | n/a |
| MMS | - | Yes | n/a |
| Text Messaging Templates | Yes | Yes | n/a |
| Music | |||
| FM Radio | - | Yes | - |
| Headphone Jack (3.5mm) | - | Yes | - |
| Music Player | - | Yes | n/a |
| Stereo Speakers | Yes | - | Yes |
| Photo & Video | |||
| TV Output | - | - | Yes |
| Power | |||
| Fast Charging | - | - | Yes |
| Wireless Charging | - | - | Yes |
| Productivity | |||
| Alarm | Yes | Yes | n/a |
| Calculator | Yes | Yes | n/a |
| Calendar | Yes | Yes | n/a |
| Voice Memo | Yes | Yes | n/a |
| Software | |||
| Games | Yes | - | n/a |
| Java (J2ME) | Yes | - | n/a |
| Voice | |||
| HD Voice | - | Yes | Yes |
| Headset Jack (2.5 mm) | Yes | - | n/a |
| Push-To-Talk | Yes | Yes | - |
| Speaker Phone | Yes | Yes | Yes |
| Samsung SPH-Z400 | Sonim XP3plus | Samsung Galaxy S21 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung SPH-Z400 | Sonim XP3plus | Samsung Galaxy S21 |
