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Phone Siemens C56 Samsung UpStage M620 Google Pixel 7a Samsung Galaxy S21 Samsung MM-A940
Current U.S. Carriers (none) (none) AT&T
US Cellular
Verizon
Verizon (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? 2.1" diag.
4 : 3
6.1" diag.
20 : 9
6.2" diag.
20 : 9
?
Display Resolution & Type 101 x 64 pixels 176 x 220 pixels
(~134 ppi)
LCD (TFT/TFD)
1080 x 2400 pixels
(~431 ppi)
AMOLED
1080 x 2400 pixels
(~424 ppi)
AMOLED
176 x 220 pixels
LCD (TFT/TFD)
Display Refresh ? ? 90 Hz 120 Hz ?
Battery 700 mAh 620 mAh 4,385 mAh 4,000 mAh ?
Processor ? ? Google Tensor G2 2.8 GHz Qualcomm Snapdragon 888 ?
RAM ? ? 8 GB 8 GB ?
Storage ? raw hardware ? raw hardware 128 GB 128 GB * ? raw hardware
Main Camera - 1 megapixel 64 megapixel 12 megapixel 2 megapixel
Wide Camera - - 13 megapixel 12 megapixel -
Tele Camera - - - 64 megapixel -
Video Capture - ? 4K UHD 8K ?
Front Camera - - 13 megapixel 10 megapixel -
Weight 3 oz
(85g)
2.57 oz
(73g)
6.8 oz
(193g)
6.03 oz
(171g)
4.9 oz
(139g)
Dimensions 3.98" x 1.73" x 0.83"
(101 x 44 x 21.1 mm)
4.07" x 1.73" x 0.37"
(103 x 44 x 9.4 mm)
6" x 2.8" x 0.4"
(152 x 71 x 10.2 mm)
5.97" x 2.8" x 0.31"
(152 x 71 x 7.9 mm)
3.68" x 1.83" x 1.01"
(93 x 46 x 25.7 mm)
Form Factor Slab Slab Slab Slab Clamshell
Platform / OS (proprietary) (proprietary) Android Android (proprietary)
Network Bands

GSM: 850, 1900

CDMA: 850, 1900

5G: 1, 2, 3, 5, 7, 8, 12, 14, 20, 25, 28, 30, 38, 41, 48, 66, 71, 77-A, 77-C, 78, 260, 261

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, 6, 8, 19

GSM: 850, 900, 1800, 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

CDMA: 850, 1900

Data Technology GPRS EVDO r0 NR (5G) NR (5G) EVDO r0
Features 
Barometer - - Yes Yes -
Fingerprint Reader - - Yes
in-display (optical)
Yes
in-display (ultrasonic)
-
Flashlight - - Yes Yes -
GPS / Location Yes - n/a n/a Yes
Water-Resistant - - Yes
IPX7 (snorkeling)
Yes
IPX8 (SCUBA)
-
Accessibility
Adjustable Text Size - Yes n/a n/a -
Hearing Aid Compatible - Yes
M4 (very compatible)
Yes
M3, T4 (very tele-coil compatible)
Yes
M3, T3 (mostly tele-coil compatible)
-
Multiple Languages Yes - n/a n/a Yes
TTY/TDD (Digital) Yes Yes Yes Yes Yes
Alerts
Extra Display - Yes - - Yes
Ringer Profiles Yes - - - -
Connectivity
Bluetooth - Yes Yes Yes Yes
NFC - - Yes Yes -
USB Yes Yes Yes
USB Type C
Yes
USB Type C
-
Wi-Fi - - Yes
6E (802.11 a,ac,ax,b,g,n)
Yes
6 (802.11 a,ac,ax,b,g,n)
-
Contacts
Picture ID - Yes n/a n/a Yes
Ringer ID Yes Yes n/a n/a Yes
Voice Dialing Yes Yes n/a n/a Yes
Customization
Changeable Body Plates Yes - - - -
Custom Graphics Yes Yes n/a n/a Yes
Custom Ringtones Yes Yes n/a n/a Yes
Real-Music Ringers - Yes n/a n/a -
Data & Network
Data Tethering Yes - n/a n/a Yes
Dual-SIM - - Yes - -
External Antenna Jack - Yes n/a n/a -
WAP / Web Browser Yes Yes n/a n/a Yes
Input
Predictive Text Entry Yes Yes n/a n/a Yes
Side Keys - Yes Yes Yes Yes
Touch Screen - - Yes
Capacitive
Yes
Capacitive
-
Memory
Memory Card Slot - Yes - - Yes
Messaging
EMS / Picture Messaging Yes - n/a n/a -
Instant Messaging - Yes n/a n/a -
MMS - Yes n/a n/a -
Text Messaging Templates Yes Yes n/a n/a Yes
Music
Music Player - Yes n/a n/a Yes
Stereo Speakers - - Yes Yes -
Photo & Video
TV Output - - - Yes -
Power
Fast Charging - - Yes Yes -
Wireless Charging - - Yes Yes -
Productivity
Alarm Yes Yes n/a n/a Yes
Calculator Yes Yes n/a n/a Yes
Calendar Yes Yes n/a n/a Yes
To-Do List - Yes n/a n/a Yes
Voice Memo - Yes n/a n/a Yes
Software
Games Yes Yes n/a n/a Yes
Java (J2ME) Yes Yes n/a n/a Yes
Voice
Call Screening - - Yes - -
HD Voice - - Yes Yes -
Headset Jack (2.5 mm) - - n/a n/a Yes
Speaker Phone Yes Yes Yes Yes Yes
  Siemens C56 Samsung UpStage M620 Google Pixel 7a Samsung Galaxy S21 Samsung MM-A940
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Siemens C56 Samsung UpStage M620 Google Pixel 7a Samsung Galaxy S21 Samsung MM-A940

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