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Phone Ericsson T66 Ericsson R520 AT&T Vista ZTE Overture 2 / Maven
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? ? 5.5" diag.
18 : 9
4.5" diag.
16 : 9
Display Resolution & Type ? ? 720 x 1440 pixels
(~293 ppi)
LCD (TFT/TFD)
480 x 854 pixels
(~218 ppi)
LCD (TFT/TFD)
Display Refresh ? ? 60 Hz 60 Hz
Battery ? ? 2,450 mAh 2,100 mAh
Processor ? ? 2 GHz MediaTek Helio A22 (MT6761V) 1.2 GHz Qualcomm Snapdragon 410 (MSM8916)
RAM ? ? 3 GB 1 GB
Storage ? raw hardware ? raw hardware 32 GB 8 GB
Main Camera - - 8 megapixel 5 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture - - 1080p HD 720p HD
Front Camera - - 5 megapixel Yes
Weight 2.08 oz
(59g)
4.23 oz
(120g)
5.51 oz
(156g)
4.71 oz
(134g)
Dimensions 3.62" x 1.61" x 0.69"
(92 x 41 x 17.5 mm)
5.12" x 1.97" x 0.63"
(130 x 50 x 16 mm)
5.88" x 2.82" x 0.35"
(149 x 72 x 8.9 mm)
5.31" x 2.59" x 0.39"
(135 x 66 x 9.9 mm)
Form Factor Slab Slab Slab Slab
Platform / OS (proprietary) (proprietary) Android Android
Network Bands

GSM: 900, 1800, 1900

GSM: 900, 1800, 1900

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

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 4)
Features 
Flashlight - - Yes Yes
Accessibility
Hearing Aid Compatible - - Yes Yes *
Multiple Languages Yes Yes n/a n/a
TTY/TDD (Digital) - - - Yes
Alerts
Ringer Profiles Yes Yes - -
Connectivity
Bluetooth - Yes Yes Yes
Infrared (IR) - Yes - -
USB - - Yes
USB Type C
Yes
Micro-USB
Wi-Fi - - Yes Yes
4 (802.11 b,g,n)
Contacts
Voice Dialing - Yes n/a n/a
Customization
Custom Graphics Yes - n/a n/a
Custom Ringtones Yes Yes n/a n/a
Data & Network
Data Tethering - Yes n/a n/a
WAP / Web Browser Yes Yes n/a n/a
Input
Predictive Text Entry Yes Yes n/a n/a
Side Keys Yes Yes Yes Yes
Touch Screen - - Yes Yes
Memory
Memory Card Slot - - Yes Yes
Messaging
EMS / Picture Messaging Yes - n/a n/a
Text Messaging Templates Yes Yes n/a n/a
Music
Headphone Jack (3.5mm) - - Yes Yes
Productivity
Alarm Yes Yes n/a n/a
Calculator Yes Yes n/a n/a
Calendar Yes Yes n/a n/a
To-Do List Yes - n/a n/a
Voice Memo - Yes n/a n/a
Software
Games Yes Yes n/a n/a
Voice
HD Voice - - Yes -
Speaker Phone - Yes Yes Yes
  * Some versions only
  Ericsson T66 Ericsson R520 AT&T Vista ZTE Overture 2 / Maven
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Ericsson T66 Ericsson R520 AT&T Vista ZTE Overture 2 / Maven

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