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Phone Siemens SL56 Motorola Q Samsung Galaxy S21 Samsung SGH-E900 / E906 LG AX-390 / UX-390
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? ? 6.2" diag.
20 : 9
? ?
Display Resolution & Type 101 x 80 pixels
LCD (STN)
320 x 240 pixels
LCD (TFT/TFD)
1080 x 2400 pixels
(~424 ppi)
AMOLED
240 x 320 pixels
LCD (TFT/TFD)
128 x 128 pixels
LCD (STN)
Display Refresh ? ? 120 Hz ? ?
Battery 500 mAh 1,130 mAh 4,000 mAh 800 mAh 1,000 mAh
Processor ? ? 2.8 GHz Qualcomm Snapdragon 888 ? ?
RAM ? ? 8 GB ? ?
Storage ? raw hardware ? raw hardware 128 GB * ? raw hardware ? raw hardware
Main Camera - 1 megapixel 12 megapixel 2 megapixel -
Wide Camera - - 12 megapixel - -
Tele Camera - - 64 megapixel - -
Video Capture - ? 8K ? -
Front Camera - - 10 megapixel - -
Weight 2.79 oz
(79g)
4.06 oz
(115g)
6.03 oz
(171g)
3.28 oz
(93g)
3.74 oz
(106g)
Dimensions 3.21" x 1.75" x 0.86"
(82 x 44 x 21.8 mm)
4.57" x 2.52" x 0.47"
(116 x 64 x 11.9 mm)
5.97" x 2.8" x 0.31"
(152 x 71 x 7.9 mm)
3.66" x 1.77" x 0.65"
(93 x 45 x 16.5 mm)
3.82" x 1.98" x 0.94"
(97 x 50 x 23.9 mm)
Form Factor Slide Slab Slab Slide Clamshell
Platform / OS (proprietary) Windows Mobile Standard Android (proprietary) (proprietary)
Network Bands

GSM: 850, 1900

CDMA: 850, 1900

5G: 2, 5, 12, 25, 30, 41, 66, 71, 77-C, 260, 261

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 29, 30, 38, 39, 40, 41, 46, 48, 66, 71

WCDMA: 1, 2, 4, 5, 8

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

GSM: 900, 1800, 1900

*

CDMA: 850, 1900

AMPS: 850

Data Technology GPRS EVDO r0 NR (5G) EDGE 1xRTT
Features 
Barometer - - Yes - -
Fingerprint Reader - - Yes
in-display (ultrasonic)
- -
Flashlight - - Yes - -
GPS / Location - n/a n/a - Yes
Water-Resistant - - Yes
IPX8 (SCUBA)
- -
Accessibility
Hearing Aid Compatible - Yes Yes - Yes
Multiple Languages Yes n/a n/a Yes Yes
TTY/TDD (Digital) - Yes Yes - Yes
Alerts
Extra Display - - - - Yes
Ringer Profiles Yes Yes - - -
Connectivity
Bluetooth - Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
-
Infrared (IR) Yes Yes - - -
NFC - - Yes - -
USB - Yes
Mini-USB
Yes
USB Type C
Yes -
Wi-Fi - - Yes
6 (802.11 a,ac,ax,b,g,n)
- -
Contacts
Picture ID Yes n/a n/a Yes Yes
Ringer ID Yes n/a n/a Yes -
Voice Dialing Yes n/a n/a - Yes
Customization
Custom Graphics Yes n/a n/a Yes Yes
Custom Ringtones Yes n/a n/a Yes Yes
Real-Music Ringers - n/a n/a Yes Yes
Data & Network
Data Tethering Yes n/a n/a - -
External Antenna Jack - n/a n/a - -
WAP / Web Browser Yes n/a n/a Yes Yes
Input
Predictive Text Entry Yes n/a n/a Yes Yes
Side Keys Yes Yes Yes Yes Yes
Text Keyboard, Hardware - Yes - - -
Touch Screen - - Yes - -
Memory
Memory Card Slot - Yes - Yes -
Messaging
Email Client Yes n/a n/a Yes -
EMS / Picture Messaging Yes n/a n/a - -
Instant Messaging - n/a n/a - -
MMS Yes n/a n/a Yes Yes
Text Messaging Templates Yes n/a n/a Yes -
Music
Music Player - n/a n/a Yes -
Stereo Speakers - - Yes - -
Photo & Video
TV Output - - Yes Yes -
Power
Fast Charging - - Yes - -
Wireless Charging - - Yes - -
Productivity
Alarm Yes n/a n/a Yes Yes
Calculator Yes n/a n/a Yes Yes
Calendar Yes n/a n/a Yes Yes
To-Do List Yes n/a n/a - -
Voice Memo Yes n/a n/a Yes Yes
Software
BREW - n/a n/a - Yes
Games Yes n/a n/a Yes Yes
Java (J2ME) Yes n/a n/a Yes -
Voice
HD Voice - - Yes - -
Headset Jack (2.5 mm) - n/a n/a - Yes
Push-To-Talk - - - - Yes
Speaker Phone Yes Yes Yes Yes Yes
  Siemens SL56 Motorola Q Samsung Galaxy S21 Samsung SGH-E900 / E906 LG AX-390 / UX-390
  X > < X > < X > < X > < X

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

 
Phone Siemens SL56 Motorola Q Samsung Galaxy S21 Samsung SGH-E900 / E906 LG AX-390 / UX-390

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