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| Phone | Nokia Lumia 635 (CDMA) | Samsung SGH-i250 | Google Pixel 3a XL | 
| Current U.S. Carriers | (none) | (none) | (none) | 
| Global Availability | Released | Not yet released | Released | 
| Specifications | |||
|---|---|---|---|
| Display Size | 4.5" diag. 16 : 9 | ? | 6" diag. 18 : 9 | 
| Display Resolution & Type | 480 x 854 pixels (~218 ppi) LCD (TFT/TFD) | 176 x 220 pixels LCD (TFT/TFD) | 1080 x 2160 pixels (~402 ppi) AMOLED | 
| Display Refresh | ? | ? | 60 Hz | 
| Battery | 1,830 mAh | ? | 3,700 mAh | 
| Processor | 1.2 GHz Qualcomm Snapdragon 400 (MSM8926) | ? | 2 GHz Qualcomm Snapdragon 670 | 
| RAM | 512 MB | ? | 4 GB | 
| Storage | 8 GB | ? raw hardware | 64 GB | 
| Main Camera | 5 megapixel | 1 megapixel | 12 megapixel | 
| Wide Camera | - | - | - | 
| Tele Camera | - | - | - | 
| Video Capture | 720p HD | ? | 4K UHD | 
| Front Camera | - | - | 8 megapixel | 
| Weight | 4.73 oz (134g) | 4.59 oz (130g) | 5.89 oz (167g) | 
| Dimensions | 5.1" x 2.63" x 0.36" (130 x 67 x 9.1 mm) | 3.7" x 1.97" x 1.02" (94 x 50 x 25.9 mm) | 6.3" x 3" x 0.3" (160 x 76 x 7.6 mm) | 
| Platform / OS | Windows | Windows Mobile Standard | Android | 
| Network Bands | 4G LTE: 25, 26, 41 WCDMA: 1, 2, 5 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900 | GSM: 900, 1800, 1900 | 4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 20, 25, 26, 28, 29, 30, 38, 40, 41, 66, 71 WCDMA: 1, 2, 4, 5, 8 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900 | 
| Data Technology | LTE (Cat 3) | GPRS | LTE (Cat 11) | 
| Features | |||
| Barometer | - | - | Yes | 
| Fingerprint Reader | - | - | Yes stand-alone | 
| Flashlight | - | - | Yes | 
| Accessibility | |||
| Hearing Aid Compatible | Yes | - | Yes | 
| TTY/TDD (Digital) | Yes | - | Yes | 
| Alerts | |||
| Extra Display | - | Yes | - | 
| Ringer Profiles | - | Yes | - | 
| Connectivity | |||
| Bluetooth | Yes Classic Audio | Yes | Yes Classic Audio | 
| NFC | - | - | Yes | 
| USB | Yes Micro-USB | - | Yes USB Type C | 
| Wi-Fi | Yes 4 (802.11 b,g,n) | - | Yes 5 (802.11 a,ac,b,g,n) | 
| Input | |||
| Side Keys | Yes | Yes | Yes | 
| Touch Screen | Yes | - | Yes | 
| Memory | |||
| Memory Card Slot | Yes | Yes | - | 
| Music | |||
| FM Radio | Yes | - | - | 
| Headphone Jack (3.5mm) | Yes | - | Yes | 
| Stereo Speakers | - | - | Yes | 
| Photo & Video | |||
| DLNA | Yes | - | - | 
| Power | |||
| Fast Charging | - | - | Yes | 
| Voice | |||
| Call Screening | - | - | Yes | 
| HD Voice | - | - | Yes | 
| Speaker Phone | Yes | - | Yes | 
| Nokia Lumia 635 (CDMA) | Samsung SGH-i250 | Google Pixel 3a XL | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
|  |  |  | |
| Phone | Nokia Lumia 635 (CDMA) | Samsung SGH-i250 | Google Pixel 3a XL | 
 









