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Phone BlackBerry Key2 ZTE Aspect TCL 10 Pro Nokia 2600 Nokia Lumia 521 / 520
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size 4.5" diag.
5 : 3
2.4" diag.
4 : 3
6.5" diag.
19.5 : 9
? 4" diag.
5 : 3
Display Resolution & Type 1080 x 1620 pixels
(~433 ppi)
LCD (TFT/TFD)
320 x 240 pixels
(~167 ppi)
LCD (TFT/TFD)
1080 x 2340 pixels
(~398 ppi)
AMOLED
128 x 128 pixels
LCD (Color)
480 x 800 pixels
(~233 ppi)
LCD (TFT/TFD)
Display Refresh 60 Hz ? 60 Hz ? ?
Battery 3,500 mAh 1,000 mAh 4,500 mAh 820 mAh 1,430 mAh
Processor 2.2 GHz Qualcomm Snapdragon 660 230 MHz Qualcomm QSC6270 2 GHz Qualcomm Snapdragon 675 (SM6150) ? 1 GHz Qualcomm Snapdragon S4 MSM8270
RAM 6 GB 128 MB 6 GB ? 512 MB
Storage 64 GB * 256 MB 128 GB ? raw hardware 8 GB
Main Camera 12 megapixel 2 megapixel 64 megapixel - 5 megapixel
Wide Camera - - 16 megapixel - -
Tele Camera 12 megapixel - - - -
Video Capture 4K UHD QVGA (320 x 240) 4K UHD - 720p HD
Front Camera 8 megapixel - 24 megapixel - -
Weight 5.93 oz
(168g)
3.7 oz
(105g)
6.6 oz
(187g)
3.33 oz
(94g)
4.39 oz
(124g)
Dimensions 5.96" x 2.82" x 0.33"
(151 x 72 x 8.4 mm)
4.55" x 2.4" x 0.45"
(116 x 61 x 11.4 mm)
6.24" x 2.85" x 0.36"
(159 x 72 x 9.2 mm)
4.24" x 1.81" x 0.8"
(108 x 46 x 20.3 mm)
4.72" x 2.52" x 0.39"
(120 x 64 x 9.9 mm)
Form Factor Slab Slab Slab Slab Slab
Platform / OS Android (proprietary) Android (proprietary) Windows
Network Bands

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 20, 28, 29, 30, 38, 40, 41, 66

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

WCDMA: 2, 4

GSM: 850, 900, 1800, 1900

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 25, 26, 28, 38, 40, 41, 66

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

GSM: 850, 1900

*

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

*

Data Technology LTE (Cat 11) WCDMA (UMTS) LTE (Cat 6) - HSPA+ 21
Features 
Fingerprint Reader Yes
stand-alone
- Yes
in-display (optical)
- -
Flashlight Yes - Yes - -
GPS / Location n/a Yes n/a - n/a
Accessibility
Hearing Aid Compatible Yes Yes Yes - Yes
Multiple Languages n/a Yes n/a Yes n/a
TTY/TDD (Digital) Yes Yes - - Yes
Alerts
Ringer Profiles - Yes - Yes -
Connectivity
Bluetooth Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
- Yes
Infrared (IR) - - Yes - -
Mobile Hotspot n/a - n/a - n/a
NFC Yes - Yes - -
USB Yes
USB Type C
Yes
Micro-USB
Yes
USB Type C
- Yes
Wi-Fi Yes
5 (802.11 a,ac,b,g,n)
- Yes
5 (802.11 a,ac,b,g,n)
- Yes
Contacts
Picture ID n/a Yes n/a - n/a
Ringer ID n/a Yes n/a Yes n/a
Voice Dialing n/a - n/a - n/a
Customization
Changeable Body Plates - - - Yes -
Custom Graphics n/a Yes n/a - n/a
Custom Ringtones n/a Yes n/a Yes n/a
Real-Music Ringers n/a Yes n/a - n/a
Data & Network
Data Tethering n/a - n/a - n/a
WAP / Web Browser n/a Yes n/a - n/a
Input
Predictive Text Entry n/a Yes n/a Yes n/a
Side Keys 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 Yes n/a - n/a
Instant Messaging n/a - n/a - n/a
MMS n/a Yes n/a - n/a
Text Messaging Templates n/a Yes n/a - n/a
Music
FM Radio Yes - Yes - -
Headphone Jack (3.5mm) Yes Yes Yes - Yes
Music Player n/a Yes n/a - n/a
Photo & Video
TV Output Yes - - - -
Power
Fast Charging Yes - Yes - -
Productivity
Alarm n/a Yes n/a Yes n/a
Calculator n/a Yes n/a Yes n/a
Calendar n/a Yes n/a Yes n/a
To-Do List n/a - n/a - n/a
Voice Memo n/a Yes n/a - n/a
Software
Games n/a Yes n/a Yes n/a
Java (J2ME) n/a Yes n/a - n/a
Voice
HD Voice Yes - Yes - -
Speaker Phone Yes Yes Yes Yes Yes
  BlackBerry Key2 ZTE Aspect TCL 10 Pro Nokia 2600 Nokia Lumia 521 / 520
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone BlackBerry Key2 ZTE Aspect TCL 10 Pro Nokia 2600 Nokia Lumia 521 / 520

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