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Phone ZTE Z221 LG Volt 2 Samsung SGH-A157 Kyocera Hydro Wave / Hydro Air
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size 2" diag.
4 : 3
5" diag.
16 : 9
1.8" diag.
4 : 3
5" diag.
16 : 9
Display Resolution & Type 240 x 320 pixels
(~200 ppi)
LCD (TFT/TFD)
720 x 1280 pixels
(~294 ppi)
LCD (TFT/TFD)
128 x 160 pixels
(~116 ppi)
LCD (TFT/TFD)
540 x 960 pixels
(~220 ppi)
LCD (TFT/TFD)
Display Refresh ? 60 Hz ? 60 Hz
Battery 900 mAh 2,540 mAh 800 mAh 2,300 mAh
Processor ? 1.2 GHz Qualcomm Snapdragon 410 (MSM8916) ? 1.2 GHz Qualcomm Snapdragon 410 (MSM8916)
RAM ? 1 GB ? 1 GB
Storage 142 MB 8 GB 256 MB 8 GB
Main Camera Yes 8 megapixel - 5 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture QCIF (176 x 144) 1080p HD - 1080p HD
Front Camera - 5 megapixel - 2 megapixel
Weight 3.24 oz
(92g)
4.8 oz
(136g)
2.99 oz
(85g)
5.11 oz
(145g)
Dimensions 3.76" x 1.92" x 0.73"
(96 x 49 x 18.5 mm)
5.5" x 2.75" x 0.4"
(140 x 70 x 10.2 mm)
3.83" x 1.84" x 0.65"
(97 x 47 x 16.5 mm)
5.66" x 2.85" x 0.42"
(144 x 72 x 10.7 mm)
Form Factor Clamshell Slab Clamshell Slab
Platform / OS (proprietary) Android (proprietary) Android
Network Bands

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

4G LTE: 2, 4, 5, 12, 25, 26, 41

CDMA: 800, 850, 1900

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

4G LTE: 2, 4, 12

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

*

Data Technology HSDPA 3.6 LTE (Cat 4) ? LTE (Cat 4)
Features 
Flashlight - - - Yes
GPS / Location Yes n/a Yes n/a
Ruggedized - - - Yes
Water-Resistant - - - Yes
IPX7 (snorkeling)
Accessibility
Adjustable Text Size - n/a Yes n/a
Hearing Aid Compatible Yes Yes Yes Yes
Multiple Languages Yes n/a Yes n/a
TTY/TDD (Digital) Yes Yes Yes Yes
Alerts
Extra Display Yes - - -
Ringer Profiles Yes - Yes -
Connectivity
Bluetooth Yes
Classic Audio
Yes
Classic Audio
-
Yes
Classic Audio
Mobile Hotspot - n/a - n/a
USB Yes Yes
Micro-USB
Yes
Micro-USB
Yes
Micro-USB
Wi-Fi - Yes
4 (802.11 b,g,n)
- Yes
4 (802.11 b,g,n)
Contacts
Picture ID - n/a Yes n/a
Ringer ID - n/a Yes 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 Yes n/a Yes n/a
Data & Network
Data Tethering - 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
Touch Screen - Yes - Yes
Memory
Memory Card Slot - Yes - Yes
Messaging
Email Client Yes n/a - n/a
Instant Messaging Yes n/a - n/a
MMS Yes n/a Yes n/a
Text Messaging Templates Yes n/a Yes n/a
Music
FM Radio - Yes - -
Headphone Jack (3.5mm) - Yes - Yes
Music Player - n/a - n/a
Photo & Video
DLNA - Yes - -
Miracast - Yes - -
TV Output - Yes - -
Power
Fast Charging - - - 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 - n/a Yes n/a
Voice Memo Yes n/a Yes n/a
Software
Games Yes n/a - n/a
Java (J2ME) Yes n/a - n/a
Voice
HD Voice - Yes - Yes *
Speaker Phone Yes Yes Yes Yes
  * Some versions only
  ZTE Z221 LG Volt 2 Samsung SGH-A157 Kyocera Hydro Wave / Hydro Air
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Phone ZTE Z221 LG Volt 2 Samsung SGH-A157 Kyocera Hydro Wave / Hydro Air

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