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Phone Samsung SGH-D100 AT&T Vista Ericsson T66 HTC Desire 816
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Not yet released Released Released Released
Specifications 
Display Size ? 5.5" diag.
18 : 9
? 5.5" diag.
16 : 9
Display Resolution & Type ?
LCD (Color)
720 x 1440 pixels
(~293 ppi)
LCD (TFT/TFD)
? 720 x 1280 pixels
(~267 ppi)
LCD (TFT/TFD)
Display Refresh ? 60 Hz ? 60 Hz
Battery ? 2,450 mAh ? 2,600 mAh
Processor ? 2 GHz MediaTek Helio A22 (MT6761V) ? 1.6 GHz Qualcomm Snapdragon 400
RAM ? 3 GB ? 1.5 GB
Storage ? raw hardware 32 GB ? raw hardware 8 GB
Main Camera - 8 megapixel - 13 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture - 1080p HD - 1080p HD
Front Camera - 5 megapixel - 5 megapixel
Weight ? 5.51 oz
(156g)
2.08 oz
(59g)
5.82 oz
(165g)
Dimensions ? 5.88" x 2.82" x 0.35"
(149 x 72 x 8.9 mm)
3.62" x 1.61" x 0.69"
(92 x 41 x 17.5 mm)
6.17" x 3.1" x 0.31"
(157 x 79 x 8 mm)
Form Factor Clamshell Slab Slab Slab
Platform / OS (proprietary) Android (proprietary) Android
Network Bands

GSM: 900, 1800, 1900

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

WCDMA: 1, 2, 4, 5, 8

GSM: 900, 1800, 1900

4G LTE: 25, 26, 41

CDMA: 800, 850, 1900

Data Technology GPRS LTE (Cat 4) - LTE (Cat 3)
Features 
Flashlight - Yes - -
GPS / Location - n/a - n/a
Accessibility
Adjustable Text Size - n/a - n/a
Hearing Aid Compatible - Yes - Yes
Multiple Languages Yes n/a Yes n/a
TTY/TDD (Digital) - - - Yes
Alerts
Extra Display Yes - - -
Ringer Profiles Yes - Yes -
Connectivity
Bluetooth - Yes - Yes
Infrared (IR) Yes - - -
Mobile Hotspot - n/a - n/a
NFC - - - Yes
USB - Yes
USB Type C
- Yes
Micro-USB
Wi-Fi - Yes - 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 Yes n/a
Custom Ringtones Yes n/a Yes n/a
Real-Music Ringers - n/a - n/a
Data & Network
Data Tethering Yes n/a - n/a
WAP / Web Browser Yes n/a Yes n/a
Input
Predictive Text Entry Yes n/a Yes n/a
Side Keys Yes Yes Yes Yes
Touch Screen - Yes - Yes
Memory
Memory Card Slot - Yes - Yes
Messaging
Email Client Yes n/a - n/a
EMS / Picture Messaging - n/a Yes n/a
Instant Messaging - n/a - n/a
MMS Yes n/a - n/a
Text Messaging Templates Yes n/a Yes n/a
Music
Headphone Jack (3.5mm) - Yes - Yes
Music Player - n/a - n/a
Stereo Speakers - - - Yes
Photo & Video
DLNA - - - Yes
Miracast - - - Yes
Productivity
Alarm Yes n/a Yes n/a
Calculator Yes n/a Yes n/a
Calendar Yes n/a Yes n/a
To-Do List Yes n/a Yes n/a
Voice Memo Yes n/a - n/a
Software
Games Yes n/a Yes n/a
Java (J2ME) Yes n/a - n/a
Voice
HD Voice - Yes - Yes
Headset Jack (2.5 mm) Yes n/a - n/a
Push-To-Talk - - - Yes *
Speaker Phone - Yes - Yes
  * Some versions only
  Samsung SGH-D100 AT&T Vista Ericsson T66 HTC Desire 816
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Samsung SGH-D100 AT&T Vista Ericsson T66 HTC Desire 816

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