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Phone Nokia 3711 BlackBerry 6510 Microsoft Surface Duo 2 Siemens C56 UTStarcom CDM-7075 / CDM-220
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size 2.2" diag.
4 : 3
? 8.3" diag.
4 : 3
? ?
Display Resolution & Type 240 x 320 pixels
(~182 ppi)
LCD (TFT/TFD)
160 x 100 pixels 2688 x 1892 pixels
(~396 ppi)
AMOLED
101 x 64 pixels 128 x 160 pixels
LCD (STN)
Display Refresh ? ? 90 Hz ? ?
Battery 860 mAh 900 mAh 4,449 mAh 700 mAh 950 mAh
Processor ? ? Qualcomm Snapdragon 888 ? ?
RAM ? ? 8 GB ? ?
Storage ? raw hardware ? raw hardware 128 GB * ? raw hardware ? raw hardware
Main Camera 2 megapixel - 12 megapixel - Yes
Wide Camera - - 16 megapixel - -
Tele Camera - - 12 megapixel - -
Video Capture ? - 4K UHD - -
Front Camera - - 12 megapixel - -
Weight 3.31 oz
(94g)
5.64 oz
(160g)
10.02 oz
(284g)
3 oz
(85g)
3.5 oz
(99g)
Dimensions 3.5" x 1.85" x 0.59"
(89 x 47 x 15 mm)
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)
3.98" x 1.73" x 0.83"
(101 x 44 x 21.1 mm)
3.5" x 1.9" x 0.9"
(89 x 48 x 22.9 mm)
Form Factor Clamshell Slab Unique Slab Clamshell
Platform / OS (proprietary) BlackBerry OS Android (proprietary) (proprietary)
Network Bands

WCDMA: 1, 4, 8

GSM: 850, 900, 1800, 1900

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

GSM: 850, 1900

CDMA: 850, 1900

*

Data Technology WCDMA (UMTS) - NR (5G) GPRS 1xRTT
Features 
Fingerprint Reader - - Yes
stand-alone
- -
Flashlight - - Yes - -
GPS / Location Yes n/a n/a Yes Yes
Accessibility
Adjustable Text Size Yes n/a n/a - -
Hearing Aid Compatible - - Yes
M3, T3 (mostly tele-coil compatible)
- Yes
M3, T3 (mostly tele-coil compatible)
Multiple Languages Yes n/a n/a Yes Yes
TTY/TDD (Digital) - - - Yes Yes
Alerts
Extra Display Yes - - - Yes
Ringer Profiles Yes Yes - Yes -
Connectivity
Bluetooth Yes - Yes - -
NFC - - Yes - -
USB Yes
Micro-USB
Yes
Mini-USB
Yes
USB Type C
Yes Yes
Wi-Fi - - Yes
6 (802.11 a,ac,ax,b,g,n)
- -
Contacts
Picture ID Yes n/a n/a - Yes
Ringer ID Yes n/a n/a Yes Yes
Voice Dialing Yes n/a n/a Yes Yes
Customization
Changeable Body Plates - - - Yes -
Custom Graphics Yes n/a n/a Yes Yes
Custom Ringtones Yes n/a n/a Yes Yes
Real-Music Ringers Yes n/a n/a - Yes
Data & Network
Data Tethering Yes n/a n/a Yes -
Dual-SIM - - Yes - -
External Antenna Jack - n/a n/a - Yes
WAP / Web Browser Yes n/a n/a Yes Yes
Input
Predictive Text Entry Yes n/a n/a Yes Yes
Side Keys Yes - Yes - Yes
Text Keyboard, Hardware - Yes - - -
Touch Screen - - Yes
Capacitive
- -
Memory
Memory Card Slot Yes - - - -
Messaging
Email Client Yes n/a n/a - -
EMS / Picture Messaging - n/a n/a Yes Yes
Instant Messaging Yes n/a n/a - -
MMS Yes n/a n/a - Yes
Text Messaging Templates - n/a n/a Yes Yes
Music
FM Radio Yes - - - -
Music Player Yes n/a n/a - -
Stereo Speakers - - Yes - -
Photo & Video
Miracast - - Yes - -
TV Output - - Yes - -
Power
Fast Charging - - Yes - -
Productivity
Alarm Yes n/a n/a Yes Yes
Calculator Yes n/a n/a Yes Yes
Calendar Yes n/a n/a Yes Yes
To-Do List Yes n/a n/a - -
Voice Memo Yes n/a n/a - Yes *
Software
BREW - n/a n/a - Yes *
Games Yes n/a n/a Yes Yes
Java (J2ME) Yes n/a n/a Yes Yes *
Voice
HD Voice - - Yes - -
Headset Jack (2.5 mm) Yes n/a n/a - Yes
Push-To-Talk - Yes - - -
Speaker Phone Yes - Yes Yes Yes
  * Some versions only
  Nokia 3711 BlackBerry 6510 Microsoft Surface Duo 2 Siemens C56 UTStarcom CDM-7075 / CDM-220
  X > < X > < X > < X > < X

NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Nokia 3711 BlackBerry 6510 Microsoft Surface Duo 2 Siemens C56 UTStarcom CDM-7075 / CDM-220

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