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Phone Asus ROG Phone II Casio G'zOne Boulder Samsung Captivate (Galaxy S) Siemens SL55 TCL 20 Pro 5G
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Not yet released Released Released Released Released
Specifications 
Display Size 6.6" diag.
19.5 : 9
2" diag.
4 : 3
4" diag.
5 : 3
? 6.7" diag.
20 : 9
Display Resolution & Type 1080 x 2340 pixels
(~391 ppi)
AMOLED
240 x 320 pixels
(~200 ppi)
LCD (TFT/TFD)
480 x 800 pixels
(~233 ppi)
AMOLED
101 x 80 pixels
LCD (STN)
1080 x 2400 pixels
(~395 ppi)
AMOLED
Display Refresh 120 Hz ? 60 Hz ? 60 Hz
Battery 6,000 mAh 810 mAh 1,500 mAh 500 mAh 4,500 mAh
Processor 3 GHz Qualcomm Snapdragon 855 Plus ? 1 GHz Samsung Hummingbird Cortex A8 ? 2 GHz Qualcomm Snapdragon 750G
RAM 12 GB ? ? ? 6 GB
Storage 512 GB ? raw hardware 16 GB ? raw hardware 256 GB
Main Camera 48 megapixel 1 megapixel 5 megapixel - 48 megapixel
Wide Camera 13 megapixel - - - 16 megapixel
Tele Camera - - - - -
Video Capture 4K UHD ? 720p HD - 4K UHD
Front Camera 24 megapixel - - - 32 megapixel
Weight 8.47 oz
(240g)
4.9 oz
(139g)
4.41 oz
(125g)
2.79 oz
(79g)
6.82 oz
(193g)
Dimensions 6.73" x 3.06" x 0.37"
(171 x 78 x 9.5 mm)
3.9" x 2" x 0.9"
(99 x 51 x 22.9 mm)
4.83" x 2.52" x 0.41"
(123 x 64 x 10.4 mm)
3.21" x 1.75" x 0.86"
(82 x 44 x 21.8 mm)
6.46" x 2.87" x 0.36"
(164 x 73 x 9.1 mm)
Form Factor Slab Clamshell Slab Slide Slab
Platform / OS Android (proprietary) Android (proprietary) Android
Network Bands

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 18, 19, 20, 26, 28, 29, 32, 34, 38, 39, 40, 41, 46, 66

WCDMA: 1, 2, 3, 4, 5, 8, 19

GSM: 850, 900, 1800, 1900

CDMA: 850, 1900

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

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

Data Technology LTE (Cat 20) EVDO rA HSPA 7.2 GPRS NR (5G)
Features 
Barometer - - - - Yes
Fingerprint Reader Yes
in-display (optical)
- - - Yes
in-display (optical)
Flashlight Yes Yes - - Yes
GPS / Location n/a Yes n/a - n/a
Ruggedized - Yes - - -
Water-Resistant - Yes - - Yes
IPX2 (drip)
Accessibility
Hearing Aid Compatible Yes
M3, T3 (mostly tele-coil compatible)
Yes
M4, T4 (very tele-coil compatible)
Yes
M3 (mostly compatible)
- Yes
M4, T4 (very tele-coil compatible)
Multiple Languages n/a Yes n/a Yes n/a
TTY/TDD (Digital) - Yes Yes - Yes
Alerts
Extra Display - Yes - - -
Ringer Profiles - - - Yes -
Connectivity
Bluetooth Yes Yes Yes - Yes
Infrared (IR) - - - Yes Yes
NFC Yes - - - Yes
USB Yes
USB Type C
Yes Yes
Micro-USB
- Yes
USB Type C
Wi-Fi Yes
5 (802.11 a,ac,b,g,n)
- Yes
4 (802.11 b,g,n)
- Yes
5 (802.11 a,ac,b,g,n)
Contacts
Picture ID n/a Yes n/a Yes n/a
Ringer ID n/a Yes n/a Yes n/a
Voice Dialing n/a Yes n/a Yes n/a
Customization
Changeable Body Plates - Yes - - -
Custom Graphics n/a Yes n/a Yes n/a
Custom Ringtones n/a Yes n/a Yes n/a
Real-Music Ringers n/a - n/a - n/a
Data & Network
Data Tethering n/a Yes n/a Yes n/a
Dual-SIM Yes - - - -
WAP / Web Browser n/a Yes n/a Yes n/a
Input
Predictive Text Entry n/a Yes n/a Yes n/a
Side Keys Yes Yes Yes Yes Yes
Touch Screen Yes
Capacitive
- Yes
Capacitive
- Yes
Capacitive
Memory
Memory Card Slot - Yes Yes - Yes
Messaging
Email Client n/a - n/a Yes n/a
EMS / Picture Messaging n/a Yes n/a Yes n/a
Instant Messaging n/a - n/a - n/a
MMS n/a Yes n/a Yes n/a
Text Messaging Templates n/a Yes n/a Yes n/a
Music
FM Radio Yes - - - Yes
Headphone Jack (3.5mm) Yes - Yes - Yes
Music Player n/a Yes n/a - n/a
Stereo Speakers Yes - - - -
Photo & Video
DLNA - - Yes - -
TV Output Yes - - - -
Power
Fast Charging Yes - - - Yes
Wireless Charging - - - - Yes
Productivity
Alarm n/a Yes n/a Yes n/a
Calculator n/a Yes n/a Yes n/a
Calendar n/a Yes n/a Yes n/a
To-Do List n/a - n/a Yes n/a
Voice Memo n/a Yes n/a Yes n/a
Software
BREW n/a Yes n/a - n/a
Games n/a Yes n/a Yes n/a
Java (J2ME) n/a - n/a Yes n/a
Voice
HD Voice - - - - Yes
Push-To-Talk - Yes - - -
Speaker Phone Yes Yes Yes Yes Yes
  Asus ROG Phone II Casio G'zOne Boulder Samsung Captivate (Galaxy S) Siemens SL55 TCL 20 Pro 5G
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Phone Asus ROG Phone II Casio G'zOne Boulder Samsung Captivate (Galaxy S) Siemens SL55 TCL 20 Pro 5G

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