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Phone Samsung SGH-A437 / A436 ZTE Z222 / Z223 Samsung SGH-E640 ZTE Blade X Max ZTE Flash
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size 2" diag.
4 : 3
2" diag.
4 : 3
? 6" diag.
16 : 9
4.5" diag.
16 : 9
Display Resolution & Type 128 x 160 pixels
(~102 ppi)
LCD (TFT/TFD)
176 x 220 pixels
(~141 ppi)
LCD (TFT/TFD)
176 x 220 pixels
LCD (TFT/TFD)
1080 x 1920 pixels
(~367 ppi)
LCD (TFT/TFD)
720 x 1280 pixels
(~326 ppi)
LCD (TFT/TFD)
Display Refresh ? ? ? 60 Hz 60 Hz
Battery 900 mAh 900 mAh 800 mAh 3,400 mAh 1,780 mAh
Processor ? QSC6270 ? 1.4 GHz Qualcomm Snapdragon 435 (MSM8940) 1.5 GHz Qualcomm Snapdragon S4 Plus MSM8960
RAM ? 64 MB ? 2 GB 1 GB
Storage ? raw hardware 128 MB ? raw hardware 32 GB 8 GB
Main Camera Yes Yes 1 megapixel 13 megapixel 12 megapixel
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture - ? QCIF (176 x 144) 1080p HD 1080p HD
Front Camera - - - 5 megapixel 1 megapixel
Weight 2.9 oz
(82g)
3.24 oz
(92g)
3.17 oz
(90g)
6.93 oz
(196g)
5.2 oz
(147g)
Dimensions 3.74" x 1.89" x 0.63"
(95 x 48 x 16 mm)
3.76" x 1.92" x 0.73"
(96 x 49 x 18.5 mm)
3.37" x 1.78" x 0.93"
(86 x 45 x 23.6 mm)
6.5" x 3.27" x 0.37"
(165 x 83 x 9.4 mm)
5.27" x 2.56" x 0.38"
(134 x 65 x 9.7 mm)
Form Factor Clamshell Clamshell Clamshell Slab Slab
Platform / OS (proprietary) (proprietary) (proprietary) Android Android
Network Bands

GSM: 850, 900, 1800, 1900

WCDMA: 2, 5

GSM: 850, 1900

GSM: 900, 1800, 1900

4G LTE: 2, 4, 5, 12

WCDMA: 1, 2, 4, 5

GSM: 850, 900, 1800, 1900

4G LTE: 25

CDMA: 800, 850, 1900

Data Technology EDGE HSDPA 3.6 GPRS LTE (Cat 4) LTE (Cat 3)
Features 
Fingerprint Reader - - - Yes
stand-alone
-
Flashlight - - - Yes -
GPS / Location - - - n/a n/a
Accessibility
Adjustable Text Size - - - n/a n/a
Hearing Aid Compatible Yes * Yes - Yes Yes
Multiple Languages Yes Yes Yes n/a n/a
TTY/TDD (Digital) Yes Yes - Yes Yes
Alerts
Extra Display Yes Yes Yes - -
Ringer Profiles - Yes - - -
Connectivity
Bluetooth Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
Mobile Hotspot - - - n/a n/a
NFC - - - - Yes
USB - Yes
Micro-USB
Yes Yes
USB Type C
Yes
Micro-USB
Wi-Fi - - - Yes
4 (802.11 b,g,n)
Yes
4 (802.11 b,g,n)
Contacts
Picture ID Yes Yes Yes n/a n/a
Ringer ID Yes Yes Yes n/a n/a
Voice Dialing - - - 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 Yes n/a n/a
Data & Network
Data Tethering 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 Yes
Touch Screen - - - Yes Yes
Memory
Memory Card Slot - - - Yes Yes
Messaging
Email Client - Yes Yes n/a n/a
EMS / Picture Messaging - - Yes n/a n/a
Instant Messaging Yes - - n/a n/a
MMS Yes Yes Yes n/a n/a
Text Messaging Templates Yes Yes Yes n/a n/a
Music
FM Radio - Yes * - - -
Headphone Jack (3.5mm) - - - Yes Yes
Music Player - - Yes n/a n/a
Power
Fast Charging - - - 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 - Yes n/a n/a
Voice Memo Yes Yes Yes n/a n/a
Software
Games Yes Yes Yes n/a n/a
Java (J2ME) Yes Yes Yes n/a n/a
Voice
HD Voice - - - - Yes
Speaker Phone Yes Yes Yes Yes Yes
  * Some versions only
  Samsung SGH-A437 / A436 ZTE Z222 / Z223 Samsung SGH-E640 ZTE Blade X Max ZTE Flash
  X > < X > < X > < X > < X

NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Samsung SGH-A437 / A436 ZTE Z222 / Z223 Samsung SGH-E640 ZTE Blade X Max ZTE Flash

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