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Phone Samsung SGH-E400 LG VX-6100 Samsung UpStage M620 Apple iPhone 4 (GSM) Samsung Galaxy S21
Current U.S. Carriers (none) (none) (none) (none) Verizon
Global Availability Not yet released Released Released Released Released
Specifications 
Display Size ? ? 2.1" diag.
4 : 3
3.5" diag.
5 : 3
6.2" diag.
20 : 9
Display Resolution & Type 128 x 144 pixels
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
176 x 220 pixels
(~134 ppi)
LCD (TFT/TFD)
640 x 960 pixels
(~330 ppi)
LCD (TFT/TFD)
1080 x 2400 pixels
(~424 ppi)
AMOLED
Display Refresh ? ? ? 60 Hz 120 Hz
Battery 700 mAh 1,000 mAh 620 mAh ? 4,000 mAh
Processor ? ? ? Apple A4 2.8 GHz Qualcomm Snapdragon 888
RAM ? ? ? ? 8 GB
Storage ? raw hardware ? raw hardware ? raw hardware 32 GB * 128 GB *
Main Camera - Yes 1 megapixel 5 megapixel 12 megapixel
Wide Camera - - - - 12 megapixel
Tele Camera - - - - 64 megapixel
Video Capture - - ? 720p HD 8K
Front Camera - - - Yes 10 megapixel
Weight 3.1 oz
(88g)
3.88 oz
(110g)
2.57 oz
(73g)
4.8 oz
(136g)
6.03 oz
(171g)
Dimensions 3.46" x 1.65" x 0.89"
(88 x 42 x 22.6 mm)
3.56" x 1.9" x 0.94"
(90 x 48 x 23.9 mm)
4.07" x 1.73" x 0.37"
(103 x 44 x 9.4 mm)
4.5" x 2.31" x 0.37"
(114 x 59 x 9.4 mm)
5.97" x 2.8" x 0.31"
(152 x 71 x 7.9 mm)
Form Factor Clamshell Clamshell Slab Slab Slab
Platform / OS (proprietary) (proprietary) (proprietary) iOS Android
Network Bands

GSM: 900, 1800, 1900

CDMA: 850, 1900

AMPS: 850

CDMA: 850, 1900

WCDMA: 1, 2, 5, 8

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

Data Technology GPRS 1xRTT EVDO r0 HSPA 7.2 NR (5G)
Features 
Barometer - - - - Yes
Fingerprint Reader - - - - Yes
in-display (ultrasonic)
Flashlight - - - - Yes
GPS / Location - Yes - n/a n/a
Water-Resistant - - - - Yes
IPX8 (SCUBA)
Accessibility
Adjustable Text Size - - Yes n/a n/a
Hearing Aid Compatible - - Yes
M4 (very compatible)
Yes
M3, T3 (mostly tele-coil compatible)
Yes
M3, T3 (mostly tele-coil compatible)
Multiple Languages Yes Yes - n/a n/a
TTY/TDD (Digital) - Yes Yes Yes Yes
Alerts
Extra Display Yes Yes Yes - -
Connectivity
Bluetooth - - Yes Yes Yes
Infrared (IR) Yes - - - -
Mobile Hotspot - - - n/a n/a
NFC - - - - Yes
USB - Yes Yes Yes Yes
USB Type C
Wi-Fi - - - Yes
4 (802.11 b,g,n)
Yes
6 (802.11 a,ac,ax,b,g,n)
Contacts
Picture ID - Yes Yes n/a n/a
Ringer ID - Yes Yes n/a n/a
Voice Dialing - Yes Yes n/a n/a
Customization
Custom Graphics Yes Yes Yes n/a n/a
Custom Ringtones Yes Yes Yes n/a n/a
Real-Music Ringers - - Yes n/a n/a
Data & Network
Data Tethering Yes Yes - n/a n/a
External Antenna Jack - - Yes n/a n/a
WAP / Web Browser Yes Yes Yes n/a n/a
Input
Predictive Text Entry Yes Yes Yes n/a n/a
Side Keys Yes Yes 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 Yes - n/a n/a
Instant Messaging - - Yes n/a n/a
MMS - Yes Yes n/a n/a
Text Messaging Templates Yes Yes Yes n/a n/a
Music
Headphone Jack (3.5mm) - - - Yes -
Music Player - - Yes n/a n/a
Stereo Speakers - - - - Yes
Photo & Video
TV Output - - - Yes Yes
Power
Fast Charging - - - - Yes
Wireless Charging - - - - Yes
Productivity
Alarm Yes Yes Yes n/a n/a
Calculator Yes Yes Yes n/a n/a
Calendar Yes Yes Yes n/a n/a
To-Do List Yes - Yes n/a n/a
Voice Memo - Yes Yes n/a n/a
Software
BREW - Yes - n/a n/a
Games Yes Yes Yes n/a n/a
Java (J2ME) Yes - Yes n/a n/a
Voice
HD Voice - - - - Yes
Headset Jack (2.5 mm) Yes Yes - n/a n/a
Speaker Phone - Yes Yes Yes Yes
  * Some versions only
  Samsung SGH-E400 LG VX-6100 Samsung UpStage M620 Apple iPhone 4 (GSM) Samsung Galaxy S21
  X > < X > < X > < X > < X

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

 
Phone Samsung SGH-E400 LG VX-6100 Samsung UpStage M620 Apple iPhone 4 (GSM) Samsung Galaxy S21

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