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Phone Samsung SGH-A157 Samsung Wafer R510 Nokia 6315i ZTE Blade A7 Prime Coolpad Quattro 4G
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size 1.8" diag.
4 : 3
1.9" diag.
4 : 3
? 6.1" diag.
19.5 : 9
4" diag.
5 : 3
Display Resolution & Type 128 x 160 pixels
(~116 ppi)
LCD (TFT/TFD)
220 x 176 pixels
(~148 ppi)
LCD (TFT/TFD)
176 x 220 pixels
LCD (TFT/TFD)
720 x 1560 pixels
(~282 ppi)
LCD (TFT/TFD)
480 x 800 pixels
(~233 ppi)
LCD (TFT/TFD)
Display Refresh ? ? ? 60 Hz 60 Hz
Battery 800 mAh 800 mAh 950 mAh 3,200 mAh 1,600 mAh
Processor ? ? ? 2 GHz MediaTek Helio A22 (MT6761) ?
RAM ? ? ? 3 GB ?
Storage 256 MB ? raw hardware ? raw hardware 32 GB 512 MB
Main Camera - 1 megapixel 1 megapixel 16 megapixel 3 megapixel
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture - ? ? 1080p HD VGA (640 x 480)
Front Camera - - - 5 megapixel Yes
Weight 2.99 oz
(85g)
2.47 oz
(70g)
3.34 oz
(95g)
5.82 oz
(165g)
3.31 oz
(94g)
Dimensions 3.83" x 1.84" x 0.65"
(97 x 47 x 16.5 mm)
4.45" x 1.97" x 0.33"
(113 x 50 x 8.4 mm)
3.52" x 1.87" x 0.72"
(89 x 47 x 18.3 mm)
6.17" x 2.87" x 0.32"
(157 x 73 x 8.1 mm)
4.96" x 2.6" x 0.51"
(126 x 66 x 13 mm)
Form Factor Clamshell Slab Clamshell Slab Slab
Platform / OS (proprietary) (proprietary) (proprietary) Android Android
Network Bands

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

CDMA: 850, 1900

CDMA: 850, 1900

4G LTE: 2, 4, 5, 13

4G LTE: 2, 4

CDMA: 850, 1700, 1900

Data Technology ? EVDO r0 EVDO r0 LTE (Cat 4) LTE (Cat 3)
Features 
Fingerprint Reader - - - Yes -
Flashlight - - - Yes -
GPS / Location Yes Yes Yes n/a n/a
Water-Resistant - - - Yes
IPX2 (drip)
-
Accessibility
Adjustable Text Size Yes - - n/a n/a
Hearing Aid Compatible Yes Yes Yes Yes Yes
Multiple Languages Yes Yes Yes n/a n/a
TTY/TDD (Digital) Yes Yes Yes - Yes
Alerts
Extra Display - - Yes - -
Ringer Profiles Yes - - - -
Connectivity
Bluetooth - Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
Mobile Hotspot - - - n/a n/a
USB Yes
Micro-USB
- Yes Yes
USB Type C
Yes
Wi-Fi - - - Yes
5 (802.11 a,ac,b,g,n)
Yes
Contacts
Picture ID Yes Yes Yes n/a n/a
Ringer ID Yes - Yes n/a n/a
Voice Dialing - Yes Yes n/a n/a
Customization
Custom Graphics Yes Yes Yes n/a n/a
Custom Ringtones Yes Yes Yes n/a n/a
Real-Music Ringers Yes - - n/a n/a
Data & Network
Data Tethering - - Yes n/a n/a
External Antenna Jack - - Yes n/a n/a
WAP / Web Browser Yes Yes Yes n/a n/a
Input
Predictive Text Entry Yes Yes Yes n/a n/a
Side Keys - Yes Yes Yes Yes
Touch Screen - - - Yes Yes
Memory
Memory Card Slot - Yes Yes Yes Yes
Messaging
Email Client - - - n/a n/a
Instant Messaging - - - n/a n/a
MMS Yes Yes Yes n/a n/a
Text Messaging Templates Yes - Yes n/a n/a
Music
FM Radio - - - Yes -
Headphone Jack (3.5mm) - - - Yes Yes
Music Player - Yes Yes n/a n/a
Stereo Speakers - Yes - - -
Productivity
Alarm Yes Yes Yes n/a n/a
Calculator Yes Yes Yes n/a n/a
Calendar Yes Yes Yes n/a n/a
To-Do List Yes - - n/a n/a
Voice Memo Yes Yes - n/a n/a
Software
BREW - Yes Yes n/a n/a
Games - Yes Yes n/a n/a
Voice
HD Voice - - - Yes -
Headset Jack (2.5 mm) - - Yes n/a n/a
Speaker Phone Yes Yes Yes Yes Yes
  Samsung SGH-A157 Samsung Wafer R510 Nokia 6315i ZTE Blade A7 Prime Coolpad Quattro 4G
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Phone Samsung SGH-A157 Samsung Wafer R510 Nokia 6315i ZTE Blade A7 Prime Coolpad Quattro 4G

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