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Phone Samsung SGH-X640 TCL 20 Pro 5G Sony Ericsson K850 HTC Desire 555
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? 6.7" diag.
20 : 9
2.2" diag.
4 : 3
5" diag.
16 : 9
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
1080 x 2400 pixels
(~395 ppi)
AMOLED
240 x 320 pixels
(~182 ppi)
LCD (TFT/TFD)
720 x 1280 pixels
(~294 ppi)
LCD (TFT/TFD)
Display Refresh ? 60 Hz ? 60 Hz
Battery 800 mAh 4,500 mAh ? 2,200 mAh
Processor ? 2 GHz Qualcomm Snapdragon 750G ? 1.1 GHz Qualcomm Snapdragon 210 (MSM8909)
RAM ? 6 GB ? 2 GB
Storage ? raw hardware 256 GB ? raw hardware 16 GB
Main Camera Yes 48 megapixel 5 megapixel 8 megapixel
Wide Camera - 16 megapixel - -
Tele Camera - - - -
Video Capture - 4K UHD ? 720p HD
Front Camera - 32 megapixel - 5 megapixel
Weight 3 oz
(85g)
6.82 oz
(193g)
4.2 oz
(119g)
4.93 oz
(140g)
Dimensions 3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
6.46" x 2.87" x 0.36"
(164 x 73 x 9.1 mm)
4" x 1.9" x 0.7"
(102 x 48 x 17.8 mm)
5.78" x 2.79" x 0.33"
(147 x 71 x 8.4 mm)
Form Factor Clamshell Slab Slab Slab
Platform / OS (proprietary) Android (proprietary) Android
Network Bands

GSM: 900, 1800, 1900

5G: 2, 5, 7, 41, 66, 71, 78

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 20, 25, 26, 28, 29, 30, 38, 40, 41, 48, 66, 71

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

4G LTE: 2, 4, 5, 12

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

Data Technology GPRS NR (5G) HSDPA 3.6 LTE (Cat 4)
Features 
Barometer - Yes - -
Fingerprint Reader - Yes
in-display (optical)
- -
Flashlight - Yes - Yes
Water-Resistant - Yes
IPX2 (drip)
- -
Accessibility
Hearing Aid Compatible - Yes
M4, T4 (very tele-coil compatible)
- Yes *
M4, T4 (very tele-coil compatible)
Multiple Languages Yes n/a Yes n/a
TTY/TDD (Digital) - Yes Yes Yes
Alerts
Ringer Profiles - - Yes -
Connectivity
Bluetooth - Yes Yes Yes
Infrared (IR) - Yes - -
NFC - Yes - -
USB - Yes
USB Type C
Yes Yes
Micro-USB
Wi-Fi - Yes
5 (802.11 a,ac,b,g,n)
- Yes
4 (802.11 b,g,n)
Contacts
Picture ID Yes n/a Yes n/a
Ringer ID Yes n/a Yes n/a
Voice Dialing - n/a Yes n/a
Customization
Custom Graphics Yes n/a Yes n/a
Custom Ringtones Yes n/a Yes n/a
Real-Music Ringers - n/a Yes n/a
Data & Network
Data Tethering - n/a Yes 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 Yes
Touch Screen - Yes
Capacitive
- Yes
Capacitive
Memory
Memory Card Slot - Yes Yes Yes
Messaging
Email Client - n/a Yes n/a
EMS / Picture 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 Yes Yes
Headphone Jack (3.5mm) - Yes - Yes
Music Player - n/a Yes n/a
Photo & Video
DLNA - - - Yes
Miracast - - - Yes
Video Calling - n/a Yes * n/a
Power
Fast Charging - Yes - -
Wireless 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 Yes n/a Yes n/a
Voice Memo Yes n/a Yes n/a
Software
Games Yes n/a Yes n/a
Java (J2ME) Yes n/a Yes n/a
Voice
HD Voice - Yes - Yes
Headset Jack (2.5 mm) Yes n/a - n/a
Speaker Phone Yes Yes Yes Yes
  * Some versions only
  Samsung SGH-X640 TCL 20 Pro 5G Sony Ericsson K850 HTC Desire 555
  X > < X > < X > < X

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

 
Phone Samsung SGH-X640 TCL 20 Pro 5G Sony Ericsson K850 HTC Desire 555

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