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Phone Ericsson T28 World Kyocera 2135 Kyocera 2235 BLU S1 Ericsson T66
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Not yet released Released
Specifications 
Display Size ? ? ? 5.2" diag.
16 : 9
?
Display Resolution & Type ? ? ? 720 x 1280 pixels
(~282 ppi)
LCD (TFT/TFD)
?
Display Refresh ? ? ? 60 Hz ?
Battery 500 mAh 925 mAh ? 2,800 mAh ?
Processor ? ? ? 1.5 GHz MediaTek 6750 ?
RAM ? ? ? 2 GB ?
Storage ? raw hardware ? raw hardware ? raw hardware 16 GB ? raw hardware
Main Camera - - - 13 megapixel -
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture - - - 1080p HD -
Front Camera - - - 5 megapixel -
Weight 3.14 oz
(89g)
4.7 oz
(133g)
4.34 oz
(123g)
4.83 oz
(137g)
2.08 oz
(59g)
Dimensions 3.9" x 2" x 0.6"
(99 x 51 x 15.2 mm)
5.07" x 1.89" x 1.02"
(129 x 48 x 25.9 mm)
4.72" x 1.89" x 0.95"
(120 x 48 x 24.1 mm)
5.8" x 2.87" x 0.33"
(147 x 73 x 8.4 mm)
3.62" x 1.61" x 0.69"
(92 x 41 x 17.5 mm)
Form Factor Flip Slab Slab Slab Slab
Platform / OS (proprietary) (proprietary) (proprietary) Android (proprietary)
Network Bands

GSM: 900, 1900

CDMA: 850, 1900

AMPS: 850

CDMA: 850, 1900

AMPS: 850

4G LTE: 2, 3, 4, 5, 7, 12, 17, 25, 26, 41

WCDMA: 1, 2, 4, 5, 8

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

GSM: 900, 1800, 1900

Data Technology - - 1xRTT LTE (Cat 6) -
Features 
Fingerprint Reader - - - Yes
stand-alone
-
Flashlight - - - Yes -
Accessibility
Multiple Languages - Yes Yes n/a Yes
TTY/TDD (Digital) - - - Yes -
Alerts
Ringer Profiles Yes - - - Yes
Connectivity
Bluetooth - - - Yes
Classic Audio
-
USB - - - Yes
Micro-USB
-
Wi-Fi - - - Yes
4 (802.11 b,g,n)
-
Contacts
Voice Dialing Yes - Yes n/a -
Customization
Changeable Body Plates - Yes - - -
Custom Graphics - - - n/a Yes
Custom Ringtones Yes Yes Yes n/a Yes
Data & Network
Data Tethering Yes Yes Yes n/a -
WAP / Web Browser - Yes Yes n/a Yes
Input
Predictive Text Entry - Yes Yes n/a Yes
Side Keys Yes - - Yes Yes
Touch Screen - - - Yes -
Memory
Memory Card Slot - - - Yes -
Messaging
EMS / Picture Messaging - - - n/a Yes
Text Messaging Templates - Yes Yes n/a Yes
Music
FM Radio - - - Yes -
Headphone Jack (3.5mm) - - - Yes -
Productivity
Alarm Yes Yes Yes n/a Yes
Calculator Yes Yes Yes n/a Yes
Calendar - - - n/a Yes
To-Do List - - - n/a Yes
Voice Memo - - Yes n/a -
Software
Games Yes Yes Yes n/a Yes
Voice
HD Voice - - - Yes -
Headset Jack (2.5 mm) - Yes Yes n/a -
Speaker Phone - - - Yes -
  Ericsson T28 World Kyocera 2135 Kyocera 2235 BLU S1 Ericsson T66
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Phone Ericsson T28 World Kyocera 2135 Kyocera 2235 BLU S1 Ericsson T66

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