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| Phone | Nokia Lumia 521 / 520 | Asus Smartphone for Snapdragon Insiders | Pantech Matrix Pro C820 | Motorola KRZR K1m | Motorola Flipside |
| Current U.S. Carriers | (none) | (none) | (none) | (none) | (none) |
| Global Availability | Released | Not yet released | Released | Released | Released |
| Specifications | |||||
|---|---|---|---|---|---|
| Display Size |
4" diag. 5 : 3 |
6.8" diag. 20.5 : 9 |
2.4" diag. 4 : 3 |
? |
3.1" diag. 5 : 3 |
| Display Resolution & Type |
480 x 800 pixels (~233 ppi) LCD (TFT/TFD) |
1080 x 2448 pixels (~395 ppi) AMOLED |
240 x 320 pixels (~167 ppi) LCD (TFT/TFD) |
176 x 220 pixels LCD (TFT/TFD) |
320 x 480 pixels (~186 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | 144 Hz | ? | ? | 60 Hz |
| Battery | 1,430 mAh | 4,000 mAh | 1,320 mAh | 880 mAh | 1,150 mAh |
| Processor | 1 GHz Qualcomm Snapdragon S4 MSM8270 | 2.8 GHz Qualcomm Snapdragon 888 | 528 MHz ARM 11 | ? | 720 MHz TI OMAP 3410 |
| RAM | 512 MB | 16 GB | ? | ? | ? |
| Storage | 8 GB | 512 GB | ? raw hardware | ? raw hardware | ? raw hardware |
| Main Camera | 5 megapixel | 64 megapixel | 2 megapixel | 1 megapixel | 3 megapixel |
| Wide Camera | - | 12 megapixel | - | - | - |
| Tele Camera | - | 8 megapixel | - | - | - |
| Video Capture | 720p HD | 8K | QCIF (176 x 144) | ? | CIF (352 x 288) |
| Front Camera | - | 24 megapixel | - | - | - |
| Weight |
4.39 oz (124g) |
7.41 oz (210g) |
5.34 oz (151g) |
3.63 oz (103g) |
5.11 oz (145g) |
| Dimensions |
4.72" x 2.52" x 0.39" (120 x 64 x 9.9 mm) |
6.82" x 3.04" x 0.38" (173 x 77 x 9.6 mm) |
4.2" x 2" x 0.9" (107 x 51 x 22.9 mm) |
4.06" x 1.73" x 0.67" (103 x 44 x 17 mm) |
4.31" x 2.26" x 0.59" (109 x 57 x 15 mm) |
| Form Factor | Slab | Slab | Slide | Clamshell | Slide |
| Platform / OS | Windows | Android | Windows Mobile Standard | (proprietary) | Android |
| Network Bands |
5G: 1, 2, 3, 5, 7, 8, 12, 13, 14, 18, 20, 25, 26, 28, 30, 38, 40, 41, 46, 48, 66, 71, 77-C, 78, 257, 258, 260, 261 4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 29, 30, 32, 34, 38, 39, 40, 41, 46, 48, 66, 71 WCDMA: 1, 2, 3, 4, 5, 8, 19 GSM: 850, 900, 1800, 1900 |
WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
CDMA: 850, 1900 |
WCDMA: 2, 5 GSM: 850, 900, 1800, 1900 |
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| Data Technology | HSPA+ 21 | NR (5G) | HSDPA 3.6 | EVDO r0 | HSPA 7.2 |
| Features | |||||
| Fingerprint Reader | - |
Yes stand-alone |
- | - | - |
| Flashlight | - | Yes | - | - | - |
| GPS / Location | n/a | n/a | n/a | Yes | n/a |
| Accessibility | |||||
| Hearing Aid Compatible | Yes | Yes | - | Yes | Yes |
| Multiple Languages | n/a | n/a | n/a | Yes | n/a |
| TTY/TDD (Digital) | Yes | - | Yes | Yes | Yes |
| Alerts | |||||
| Extra Display | - | - | - | Yes | - |
| Ringer Profiles | - | - | Yes | Yes | - |
| Connectivity | |||||
| Bluetooth | Yes | Yes | Yes | Yes | Yes |
| Mobile Hotspot | n/a | n/a | n/a | - | n/a |
| NFC | - | Yes | - | - | - |
| USB | Yes |
Yes USB Type C |
Yes |
Yes Mini-USB |
Yes Micro-USB |
| Wi-Fi | Yes |
Yes 6E (802.11 a,ac,ax,b,g,n) |
- | - | Yes |
| Contacts | |||||
| Picture ID | n/a | n/a | n/a | Yes | n/a |
| Ringer ID | n/a | n/a | n/a | Yes | n/a |
| Voice Dialing | n/a | n/a | n/a | Yes | n/a |
| Customization | |||||
| Custom Graphics | n/a | n/a | n/a | Yes | n/a |
| Custom Ringtones | n/a | n/a | n/a | Yes | n/a |
| Real-Music Ringers | n/a | n/a | n/a | - | n/a |
| Data & Network | |||||
| Data Tethering | n/a | n/a | n/a | Yes | n/a |
| Dual-SIM | - | Yes | - | - | - |
| WAP / Web Browser | n/a | n/a | n/a | Yes | n/a |
| Input | |||||
| Predictive Text Entry | n/a | n/a | n/a | Yes | n/a |
| Side Keys | Yes | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | - | - | Yes | - | Yes |
| Touch Screen | Yes | Yes | - | - | Yes |
| Memory | |||||
| Memory Card Slot | Yes | - | Yes | Yes | Yes |
| Messaging | |||||
| Email Client | n/a | n/a | n/a | - | n/a |
| EMS / Picture Messaging | n/a | n/a | n/a | Yes | n/a |
| Instant Messaging | n/a | n/a | n/a | Yes * | n/a |
| MMS | n/a | n/a | n/a | Yes | n/a |
| Text Messaging Templates | n/a | n/a | n/a | Yes | n/a |
| Music | |||||
| FM Radio | - | - | - | - | Yes |
| Headphone Jack (3.5mm) | Yes | - | - | - | Yes |
| Music Player | n/a | n/a | n/a | Yes | n/a |
| Stereo Speakers | - | Yes | - | - | - |
| Power | |||||
| Fast Charging | - | Yes | - | - | - |
| Productivity | |||||
| Alarm | n/a | n/a | n/a | Yes | n/a |
| Calculator | n/a | n/a | n/a | Yes | n/a |
| Calendar | n/a | n/a | n/a | Yes | n/a |
| To-Do List | n/a | n/a | n/a | - | n/a |
| Voice Memo | n/a | n/a | n/a | Yes | n/a |
| Software | |||||
| BREW | n/a | n/a | n/a | Yes * | n/a |
| Games | n/a | n/a | n/a | Yes | n/a |
| Java (J2ME) | n/a | n/a | n/a | Yes * | n/a |
| Voice | |||||
| HD Voice | - | Yes | - | - | - |
| Speaker Phone | Yes | Yes | Yes | Yes | Yes |
| * Some versions only | |||||
| Nokia Lumia 521 / 520 | Asus Smartphone for Snapdragon Insiders | Pantech Matrix Pro C820 | Motorola KRZR K1m | Motorola Flipside | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Nokia Lumia 521 / 520 | Asus Smartphone for Snapdragon Insiders | Pantech Matrix Pro C820 | Motorola KRZR K1m | Motorola Flipside |
