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| Phone | Nokia Lumia 635 (CDMA) | UTStarcom CDM-7126 | Sony Xperia XZ1 | Samsung Galaxy S21+ |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
4.5" diag. 16 : 9 |
1.8" diag. 4 : 3 |
5.2" diag. 16 : 9 |
6.7" diag. 20 : 9 |
| Display Resolution & Type |
480 x 854 pixels (~218 ppi) LCD (TFT/TFD) |
128 x 160 pixels (~114 ppi) LCD (STN) |
1080 x 1920 pixels (~424 ppi) LCD (TFT/TFD) |
1080 x 2400 pixels (~393 ppi) AMOLED |
| Display Refresh | ? | ? | 60 Hz | 120 Hz |
| Battery | 1,830 mAh | 900 mAh | 2,700 mAh | 4,800 mAh |
| Processor | 1.2 GHz Qualcomm Snapdragon 400 (MSM8926) | Qualcomm QSC6055 | 2.5 GHz Qualcomm Snapdragon 835 (MSM8998) | 2.8 GHz Qualcomm Snapdragon 888 |
| RAM | 512 MB | ? | 4 GB | 8 GB |
| Storage | 8 GB | ? raw hardware | 64 GB | 128 GB * |
| Main Camera | 5 megapixel | - | 19 megapixel | 12 megapixel |
| Wide Camera | - | - | - | 12 megapixel |
| Tele Camera | - | - | - | 64 megapixel |
| Video Capture | 720p HD | - | 4K UHD | 8K |
| Front Camera | - | - | 13 megapixel | 10 megapixel |
| Weight |
4.73 oz (134g) |
3 oz (85g) |
5.5 oz (156g) |
7.13 oz (202g) |
| Dimensions |
5.1" x 2.63" x 0.36" (130 x 67 x 9.1 mm) |
3.6" x 1.9" x 0.7" (91 x 48 x 17.8 mm) |
5.82" x 2.89" x 0.29" (148 x 73 x 7.4 mm) |
6.36" x 2.98" x 0.31" (161 x 76 x 7.8 mm) |
| Form Factor | Slab | Clamshell | Slab | Slab |
| Platform / OS | Windows | (proprietary) | Android | Android |
| Network Bands |
4G LTE: 25, 26, 41 WCDMA: 1, 2, 5 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900 |
CDMA: 850, 1700, 1900 |
4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 25, 26, 28, 29, 40, 41, 66 WCDMA: 1, 2, 4, 5, 8 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 | LTE (Cat 3) | 1xRTT | LTE (Cat 16) | NR (5G) |
| Features | ||||
| Barometer | - | - | Yes | Yes |
| Fingerprint Reader | - | - |
Yes * stand-alone |
Yes in-display (ultrasonic) |
| Flashlight | - | - | Yes | Yes |
| GPS / Location | n/a | Yes | n/a | n/a |
| Water-Resistant | - | - |
Yes IPX8 (SCUBA) |
Yes IPX8 (SCUBA) |
| Accessibility | ||||
| Hearing Aid Compatible | Yes | Yes | Yes | Yes |
| Multiple Languages | n/a | Yes | n/a | n/a |
| TTY/TDD (Digital) | Yes | Yes | Yes | Yes |
| Connectivity | ||||
| Bluetooth |
Yes Classic Audio |
Yes Classic Audio |
Yes Classic Audio |
Yes Classic Audio |
| Mobile Hotspot | n/a | - | n/a | n/a |
| NFC | - | - | Yes | Yes |
| USB |
Yes Micro-USB |
Yes Mini-USB |
Yes USB Type C |
Yes USB Type C |
| UWB | - | - | - | Yes |
| Wi-Fi |
Yes 4 (802.11 b,g,n) |
- |
Yes 5 (802.11 a,ac,b,g,n) |
Yes 6 (802.11 a,ac,ax,b,g,n) |
| Contacts | ||||
| Picture ID | n/a | - | n/a | n/a |
| Ringer ID | n/a | Yes | n/a | n/a |
| Voice Dialing | n/a | Yes | n/a | n/a |
| Customization | ||||
| Custom Graphics | n/a | Yes | n/a | n/a |
| Custom Ringtones | n/a | 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 |
| Dual-SIM | - | - | Yes * | - |
| WAP / Web Browser | n/a | Yes | n/a | n/a |
| Input | ||||
| Predictive Text Entry | n/a | Yes | n/a | n/a |
| Side Keys | Yes | Yes | Yes | Yes |
| Touch Screen | Yes | - | Yes | Yes |
| Memory | ||||
| Memory Card Slot | Yes | - | Yes | - |
| Messaging | ||||
| Email Client | n/a | - | n/a | n/a |
| Instant Messaging | n/a | - | n/a | n/a |
| MMS | n/a | - | n/a | n/a |
| Text Messaging Templates | n/a | Yes | n/a | n/a |
| Music | ||||
| FM Radio | Yes | - | - | - |
| Headphone Jack (3.5mm) | Yes | - | Yes | - |
| Music Player | n/a | - | n/a | n/a |
| Stereo Speakers | - | - | Yes | Yes |
| Photo & Video | ||||
| DLNA | Yes | - | Yes | - |
| Miracast | - | - | Yes | - |
| TV Output | - | - | - | Yes |
| Power | ||||
| Fast Charging | - | - | Yes | Yes |
| Wireless Charging | - | - | - | Yes |
| Productivity | ||||
| Alarm | n/a | Yes | n/a | n/a |
| Calculator | n/a | Yes | n/a | n/a |
| Calendar | n/a | Yes | n/a | n/a |
| To-Do List | n/a | - | n/a | n/a |
| Voice Memo | n/a | Yes | n/a | n/a |
| Software | ||||
| BREW | n/a | Yes | n/a | n/a |
| Games | n/a | Yes | n/a | n/a |
| Voice | ||||
| HD Voice | - | - | Yes | Yes |
| Headset Jack (2.5 mm) | n/a | Yes | n/a | n/a |
| Speaker Phone | Yes | Yes | Yes | Yes |
| * Some versions only | ||||
| Nokia Lumia 635 (CDMA) | UTStarcom CDM-7126 | Sony Xperia XZ1 | Samsung Galaxy S21+ | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Nokia Lumia 635 (CDMA) | UTStarcom CDM-7126 | Sony Xperia XZ1 | Samsung Galaxy S21+ |
