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Phone T-Mobile REVVL 4 ZTE Blade Z Max Samsung SGH-X640
Current U.S. Carriers (none) (none) (none)
Global Availability Released Released Released
Specifications 
Display Size 6.2" diag.
19 : 9
6" diag.
16 : 9
?
Display Resolution & Type 720 x 1520 pixels
(~270 ppi)
LCD (TFT/TFD)
1080 x 1920 pixels
(~367 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
Display Refresh 60 Hz 60 Hz ?
Battery 3,500 mAh 4,080 mAh 800 mAh
Processor 2 GHz MediaTek Helio A22 (MT6761) 1.4 GHz Qualcomm Snapdragon 435 (MSM8940) ?
RAM 2 GB 2 GB ?
Storage 32 GB 32 GB ? raw hardware
Main Camera 13 megapixel 16 megapixel Yes
Wide Camera - - -
Tele Camera - - -
Video Capture 1080p HD 1080p HD -
Front Camera 5 megapixel 8 megapixel -
Weight 5.59 oz
(158g)
6.58 oz
(186g)
3 oz
(85g)
Dimensions 6.26" x 2.99" x 0.32"
(159 x 76 x 8.1 mm)
6.51" x 3.28" x 0.33"
(165 x 83 x 8.3 mm)
3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
Form Factor Slab Slab Clamshell
Platform / OS Android Android (proprietary)
Network Bands

4G LTE: 2, 4, 5, 7, 12, 25, 26, 41, 66, 71

WCDMA: 2, 4, 5

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

4G LTE: 2, 4, 5, 12, 66

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

GSM: 900, 1800, 1900

Data Technology LTE (Cat 6) LTE (Cat 6) GPRS
Features 
Fingerprint Reader Yes
stand-alone
Yes
stand-alone
-
Flashlight Yes Yes -
Accessibility
Hearing Aid Compatible Yes
M3, T3 (mostly tele-coil compatible)
Yes
M4, T3 (mostly tele-coil compatible)
-
Multiple Languages n/a n/a Yes
TTY/TDD (Digital) Yes Yes -
Connectivity
Bluetooth Yes Yes -
USB Yes
USB Type C
Yes
USB Type C
-
Wi-Fi Yes
5 (802.11 a,ac,b,g,n)
Yes
4 (802.11 b,g,n)
-
Contacts
Picture ID n/a n/a Yes
Ringer ID n/a n/a Yes
Customization
Custom Graphics n/a n/a Yes
Custom Ringtones n/a n/a Yes
Data & Network
WAP / Web Browser n/a n/a Yes
Input
Predictive Text Entry n/a n/a Yes
Side Keys Yes Yes Yes
Touch Screen Yes
Capacitive
Yes
Capacitive
-
Memory
Memory Card Slot Yes Yes -
Messaging
EMS / Picture Messaging n/a n/a Yes
MMS n/a n/a Yes
Text Messaging Templates n/a n/a Yes
Music
FM Radio Yes Yes -
Headphone Jack (3.5mm) Yes Yes -
Power
Fast Charging - Yes -
Productivity
Alarm n/a n/a Yes
Calculator n/a n/a Yes
Calendar n/a n/a Yes
To-Do List n/a n/a Yes
Voice Memo n/a n/a Yes
Software
Games n/a n/a Yes
Java (J2ME) n/a n/a Yes
Voice
HD Voice Yes Yes -
Headset Jack (2.5 mm) n/a n/a Yes
Speaker Phone Yes Yes Yes
  T-Mobile REVVL 4 ZTE Blade Z Max Samsung SGH-X640
  X > < X > < X

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

 
Phone T-Mobile REVVL 4 ZTE Blade Z Max Samsung SGH-X640

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