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| Phone | BlackBerry 6510 | Microsoft Surface Duo 2 | UTStarcom Slice PCS-1400 | ZTE Citrine |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? |
8.3" diag. 4 : 3 |
? |
4" diag. 5 : 3 |
| Display Resolution & Type | 160 x 100 pixels |
2688 x 1892 pixels (~396 ppi) AMOLED |
128 x 128 pixels LCD (STN) |
480 x 800 pixels (~233 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | 90 Hz | ? | 60 Hz |
| Battery | 900 mAh | 4,449 mAh | 900 mAh | 1,650 mAh |
| Processor | ? | Qualcomm Snapdragon 888 | ? | ? |
| RAM | ? | 8 GB | ? | 1 GB |
| Storage | ? raw hardware | 128 GB * | ? raw hardware | 8 GB |
| Main Camera | - | 12 megapixel | - | 5 megapixel |
| Wide Camera | - | 16 megapixel | - | - |
| Tele Camera | - | 12 megapixel | - | - |
| Video Capture | - | 4K UHD | - | ? |
| Front Camera | - | 12 megapixel | - | Yes |
| Weight |
5.64 oz (160g) |
10.02 oz (284g) |
2.3 oz (65g) |
4.82 oz (137g) |
| Dimensions |
4.53" x 2.95" x 0.95" (115 x 75 x 24.1 mm) |
5.72" x 3.63" x 0.43" (145 x 92 x 11 mm) |
4.3" x 1.8" x 0.4" (109 x 46 x 10.2 mm) |
4.92" x 2.56" x 0.41" (125 x 65 x 10.4 mm) |
| Form Factor | Slab | Unique | Slab | Slab |
| Platform / OS | BlackBerry OS | Android | (proprietary) | Android |
| Network Bands |
iDEN: 800 |
5G: 1, 2, 3, 5, 7, 20, 25, 28, 38, 41, 66, 71, 77-C, 78, 257, 260, 261 4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 19, 20, 25, 26, 28, 29, 30, 38, 39, 40, 41, 46, 48, 66, 71 WCDMA: 1, 2, 5, 8 GSM: 850, 900, 1800, 1900 |
CDMA: 1900 |
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| Data Technology | - | NR (5G) | 1xRTT | LTE (Cat 3) |
| Features | ||||
| Fingerprint Reader | - |
Yes stand-alone |
- | - |
| Flashlight | - | Yes | - | Yes |
| GPS / Location | n/a | n/a | Yes | n/a |
| Accessibility | ||||
| Adjustable Text Size | n/a | n/a | - | n/a |
| Hearing Aid Compatible | - |
Yes M3, T3 (mostly tele-coil compatible) |
- |
Yes M4, T3 (mostly tele-coil compatible) |
| Multiple Languages | n/a | n/a | - | n/a |
| TTY/TDD (Digital) | - | - | Yes | Yes |
| Alerts | ||||
| Ringer Profiles | Yes | - | - | - |
| Connectivity | ||||
| Bluetooth | - | Yes | - | Yes |
| NFC | - | Yes | - | - |
| USB |
Yes Mini-USB |
Yes USB Type C |
- |
Yes Micro-USB |
| Wi-Fi | - |
Yes 6 (802.11 a,ac,ax,b,g,n) |
- |
Yes 4 (802.11 b,g,n) |
| Contacts | ||||
| Picture ID | n/a | n/a | - | n/a |
| Ringer ID | n/a | n/a | Yes | n/a |
| Voice Dialing | n/a | n/a | - | n/a |
| Customization | ||||
| Custom Graphics | n/a | n/a | Yes | n/a |
| Custom Ringtones | n/a | n/a | Yes | n/a |
| Real-Music Ringers | n/a | n/a | - | n/a |
| Data & Network | ||||
| Dual-SIM | - | Yes | - | - |
| External Antenna Jack | n/a | n/a | Yes | n/a |
| WAP / Web Browser | n/a | n/a | Yes | n/a |
| Input | ||||
| Predictive Text Entry | n/a | n/a | Yes | n/a |
| Side Keys | - | Yes | Yes | Yes |
| Text Keyboard, Hardware | Yes | - | - | - |
| Touch Screen | - |
Yes Capacitive |
- | Yes |
| Memory | ||||
| Memory Card Slot | - | - | - | 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 | n/a | Yes | n/a |
| Music | ||||
| Headphone Jack (3.5mm) | - | - | - | Yes |
| Music Player | n/a | n/a | - | n/a |
| Stereo Speakers | - | Yes | - | - |
| Photo & Video | ||||
| Miracast | - | Yes | - | - |
| TV Output | - | Yes | - | - |
| Power | ||||
| Fast Charging | - | Yes | - | - |
| Productivity | ||||
| Alarm | n/a | n/a | Yes | n/a |
| Calculator | n/a | n/a | Yes | n/a |
| Calendar | n/a | n/a | Yes | n/a |
| To-Do List | n/a | n/a | - | n/a |
| Voice Memo | n/a | n/a | - | n/a |
| Software | ||||
| Games | n/a | n/a | Yes | n/a |
| Java (J2ME) | n/a | n/a | Yes | n/a |
| Voice | ||||
| HD Voice | - | Yes | - | - |
| Headset Jack (2.5 mm) | n/a | n/a | Yes | n/a |
| Push-To-Talk | Yes | - | - | - |
| Speaker Phone | - | Yes | Yes | Yes |
| BlackBerry 6510 | Microsoft Surface Duo 2 | UTStarcom Slice PCS-1400 | ZTE Citrine | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | BlackBerry 6510 | Microsoft Surface Duo 2 | UTStarcom Slice PCS-1400 | ZTE Citrine |
