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Phone Samsung SGH-X640 Apple iPhone 3G TCL 20 XE
Current U.S. Carriers (none) (none) (none)
Global Availability Released Released Released
Specifications 
Display Size ? 3.5" diag.
5 : 3
6.5" diag.
20 : 9
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
320 x 480 pixels
(~165 ppi)
LCD (TFT/TFD)
720 x 1600 pixels
(~269 ppi)
LCD (TFT/TFD)
Display Refresh ? 60 Hz 60 Hz
Battery 800 mAh ? 5,000 mAh
Processor ? ? 2 GHz MediaTek Helio P22 (MT6762)
RAM ? ? 3 GB
Storage ? raw hardware 16 GB * 32 GB
Main Camera Yes 2 megapixel 13 megapixel
Wide Camera - - -
Tele Camera - - -
Video Capture - - 1080p HD
Front Camera - - 5 megapixel
Weight 3 oz
(85g)
4.7 oz
(133g)
6.88 oz
(195g)
Dimensions 3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
4.52" x 2.44" x 0.49"
(115 x 62 x 12.4 mm)
6.48" x 2.95" x 0.35"
(165 x 75 x 8.9 mm)
Form Factor Clamshell Slab Slab
Platform / OS (proprietary) iOS Android
Network Bands

GSM: 900, 1800, 1900

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

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

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

Data Technology GPRS HSDPA 3.6 LTE (Cat 6)
Features 
Barometer - - Yes
Fingerprint Reader - - Yes
stand-alone
Flashlight - - Yes
GPS / Location - n/a n/a
Accessibility
Hearing Aid Compatible - - Yes
M4, T3 (mostly tele-coil compatible)
Multiple Languages Yes n/a n/a
TTY/TDD (Digital) - Yes Yes
Connectivity
Bluetooth - Yes Yes
USB - Yes Yes
USB Type C
Wi-Fi - Yes
802.11 b,g
Yes
5 (802.11 a,ac,b,g,n)
Contacts
Picture ID Yes n/a n/a
Ringer ID Yes n/a n/a
Customization
Custom Graphics Yes n/a n/a
Custom Ringtones Yes n/a n/a
Real-Music Ringers - n/a n/a
Data & Network
WAP / Web Browser Yes n/a n/a
Input
Predictive Text Entry Yes n/a n/a
Side Keys Yes Yes Yes
Touch Screen - Yes
Capacitive
Yes
Capacitive
Memory
Memory Card Slot - - Yes
Messaging
Email Client - n/a n/a
EMS / Picture Messaging Yes n/a n/a
MMS Yes n/a n/a
Text Messaging Templates Yes n/a n/a
Music
Headphone Jack (3.5mm) - Yes Yes
Music Player - n/a n/a
Photo & Video
TV Output - Yes -
Power
Fast Charging - - Yes
Productivity
Alarm Yes n/a n/a
Calculator Yes n/a n/a
Calendar Yes n/a n/a
To-Do List Yes n/a n/a
Voice Memo Yes n/a n/a
Software
Games Yes n/a n/a
Java (J2ME) Yes n/a n/a
Voice
HD Voice - - Yes
Headset Jack (2.5 mm) Yes n/a n/a
Speaker Phone Yes Yes Yes
  * Some versions only
  Samsung SGH-X640 Apple iPhone 3G TCL 20 XE
  X > < X > < X

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

 
Phone Samsung SGH-X640 Apple iPhone 3G TCL 20 XE

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