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Phone Sony Ericsson T310 Cricket Debut S2 / AT&T Calypso 4 ZTE Z998 / Unico LTE
Current U.S. Carriers (none) AT&T (none)
Global Availability Released Released Released
Specifications 
Display Size ? 6.1" diag.
19.5 : 9
4.5" diag.
16 : 9
Display Resolution & Type 101 x 80 pixels
LCD (STN)
720 x 1560 pixels
(~282 ppi)
LCD (TFT/TFD)
540 x 960 pixels
(~245 ppi)
LCD (TFT/TFD)
Display Refresh ? 60 Hz 60 Hz
Battery ? 3,000 mAh 2,070 mAh
Processor ? 2 GHz MediaTek Helio A22 (MT6761WB) 1.2 GHz Qualcomm Snapdragon 400 MSM8930
RAM ? 3 GB 1 GB
Storage ? raw hardware 64 GB 4 GB
Main Camera - 8 megapixel 5 megapixel
Wide Camera - - -
Tele Camera - - -
Video Capture - ? 720p HD
Front Camera - 5 megapixel 1 megapixel
Weight 3.42 oz
(97g)
5.64 oz
(160g)
4.8 oz
(136g)
Dimensions 4.09" x 1.93" x 0.75"
(104 x 49 x 19.1 mm)
6.11" x 2.87" x 0.34"
(155 x 73 x 8.6 mm)
5.2" x 2.6" x 0.4"
(132 x 66 x 10.2 mm)
Form Factor Slab Slab Slab
Platform / OS (proprietary) Android Android
Network Bands

GSM: 900, 1800, 1900

4G LTE: 2, 3, 4, 5, 7, 12, 14, 20, 30, 66

WCDMA: 1, 2, 4, 5, 8

4G LTE: 2, 4, 5, 17

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

*

Data Technology GPRS LTE (Cat 4) LTE (Cat 3)
Features 
Flashlight - Yes -
GPS / Location Yes n/a n/a
Accessibility
Adjustable Text Size - n/a n/a
Hearing Aid Compatible - Yes
M4, T4 (very tele-coil compatible)
Yes
M3, T4 (very tele-coil compatible)
Multiple Languages Yes n/a n/a
TTY/TDD (Digital) - - Yes
Connectivity
Bluetooth - Yes Yes
Infrared (IR) Yes - -
Mobile Hotspot - n/a n/a
USB Yes Yes
USB Type C
Yes
Micro-USB
Wi-Fi - Yes
5 (802.11 a,ac,b,g,n)
Yes
4 (802.11 b,g,n)
Contacts
Picture ID Yes n/a n/a
Ringer ID Yes n/a n/a
Voice Dialing - n/a n/a
Customization
Custom Graphics Yes n/a n/a
Custom Ringtones Yes n/a n/a
Real-Music Ringers - n/a n/a
Data & Network
Data Tethering Yes n/a n/a
WAP / Web Browser Yes n/a n/a
Input
Predictive Text Entry Yes n/a n/a
Side Keys Yes Yes Yes
Touch Screen - Yes
Capacitive
Yes
Capacitive
Memory
Memory Card Slot - Yes Yes
Messaging
Email Client Yes n/a n/a
EMS / Picture Messaging Yes n/a n/a
Instant Messaging - n/a n/a
MMS Yes n/a n/a
Text Messaging Templates Yes n/a n/a
Music
Headphone Jack (3.5mm) - Yes Yes
Music Player - n/a n/a
Power
Fast Charging - Yes -
Productivity
Alarm Yes n/a n/a
Calculator Yes n/a n/a
Calendar Yes n/a n/a
Voice Memo Yes n/a n/a
Software
Games Yes n/a n/a
Voice
HD Voice - Yes -
Speaker Phone - Yes Yes
  * Some versions only
  Sony Ericsson T310 Cricket Debut S2 / AT&T Calypso 4 ZTE Z998 / Unico LTE
  X > < X > < X

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

 
Phone Sony Ericsson T310 Cricket Debut S2 / AT&T Calypso 4 ZTE Z998 / Unico LTE

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