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Phone LG K20 / Harmony / Grace Boost Celero5G+ (2024) ZTE Blade X1 5G Apple iPhone 4 (GSM) Samsung SCH-A990
Current U.S. Carriers (none) Boost (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size 5.3" diag.
16 : 9
7" diag.
20.5 : 9
6.5" diag.
19.5 : 9
3.5" diag.
5 : 3
?
Display Resolution & Type 720 x 1280 pixels
(~277 ppi)
LCD (TFT/TFD)
1080 x 2460 pixels
(~384 ppi)
LCD (TFT/TFD)
1080 x 2340 pixels
(~396 ppi)
LCD (TFT/TFD)
640 x 960 pixels
(~330 ppi)
LCD (TFT/TFD)
240 x 320 pixels
LCD (TFT/TFD)
Display Refresh 60 Hz 120 Hz 60 Hz 60 Hz ?
Battery 2,800 mAh 5,000 mAh 4,000 mAh ? 1,000 mAh
Processor 1.4 GHz Qualcomm Snapdragon 425 (MSM8917) 2.5 GHz MediaTek Dimensity 1050 (MT6879) 2.4 GHz Qualcomm Snapdragon 765G Apple A4 ?
RAM 1.5 GB 8 GB 6 GB ? ?
Storage 16 GB 256 GB 128 GB 32 GB * ? raw hardware
Main Camera 8 megapixel 108 megapixel 48 megapixel 5 megapixel 3 megapixel
Wide Camera - 8 megapixel 8 megapixel - -
Tele Camera - - - - -
Video Capture 1080p HD 1080p HD 4K UHD 720p HD ?
Front Camera 5 megapixel 16 megapixel 16 megapixel Yes -
Weight 5 oz
(142g)
8.25 oz
(234g)
6.7 oz
(190g)
4.8 oz
(136g)
4.4 oz
(125g)
Dimensions 5.9" x 3" x 0.3"
(150 x 76 x 7.6 mm)
7.04" x 3.12" x 0.37"
(179 x 79 x 9.4 mm)
6.46" x 2.99" x 0.36"
(164 x 76 x 9.2 mm)
4.5" x 2.31" x 0.37"
(114 x 59 x 9.4 mm)
3.8" x 1.88" x 0.82"
(97 x 48 x 20.8 mm)
Form Factor Slab Slab Slab Slab Clamshell
Platform / OS Android Android Android iOS (proprietary)
Network Bands

4G LTE: 2, 4, 5, 12

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

5G: 2, 5, 25, 26, 29, 30, 41, 48, 66, 70, 71, 77-C

4G LTE: 2, 4, 5, 12, 14, 26, 29, 30, 48, 66, 71

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

5G: 2, 5, 66

4G LTE: 2, 4, 5, 12, 13, 66

WCDMA: 1, 2, 5, 8

GSM: 850, 900, 1800, 1900

CDMA: 850, 1900

Data Technology LTE (Cat 4) NR (5G) NR (5G) HSPA 7.2 EVDO r0
Features 
Barometer - Yes Yes - -
Fingerprint Reader - Yes
stand-alone
Yes
stand-alone
- -
Flashlight Yes Yes Yes - Yes
GPS / Location n/a n/a n/a n/a Yes
Water-Resistant - Yes
IPX8 (SCUBA)
- - -
Accessibility
Adjustable Text Size n/a n/a n/a n/a -
Hearing Aid Compatible Yes
M3, T3 (mostly tele-coil compatible)
Yes
M4, T3 (mostly tele-coil compatible)
Yes
M4, T4 (very tele-coil compatible)
Yes
M3, T3 (mostly tele-coil compatible)
Yes
M3 (mostly compatible)
Multiple Languages n/a n/a n/a n/a Yes
TTY/TDD (Digital) Yes - Yes Yes Yes
Alerts
Extra Display - - - - Yes
Connectivity
Bluetooth Yes Yes Yes Yes Yes
Mobile Hotspot n/a n/a n/a n/a -
NFC Yes * Yes Yes - -
USB Yes
Micro-USB
Yes
USB Type C
Yes
USB Type C
Yes Yes
Wi-Fi Yes
4 (802.11 b,g,n)
Yes
6E (802.11 a,ac,ax,b,g,n)
Yes
5 (802.11 a,ac,b,g,n)
Yes
4 (802.11 b,g,n)
-
Contacts
Picture ID n/a n/a n/a n/a Yes
Ringer ID n/a n/a n/a n/a Yes
Voice Dialing n/a n/a n/a n/a Yes
Customization
Custom Graphics n/a n/a n/a n/a Yes
Custom Ringtones n/a n/a n/a n/a Yes
Real-Music Ringers n/a n/a n/a n/a Yes
Data & Network
Data Tethering n/a n/a n/a n/a Yes
WAP / Web Browser n/a n/a n/a n/a Yes
Input
Predictive Text Entry n/a n/a n/a n/a Yes
Side Keys Yes Yes Yes Yes Yes
Touch Screen Yes
Capacitive
Yes
Capacitive
Yes
Capacitive
Yes
Capacitive
-
Memory
Memory Card Slot Yes Yes Yes - Yes
Messaging
Email Client n/a n/a n/a n/a -
EMS / Picture Messaging n/a n/a n/a n/a Yes
MMS n/a n/a n/a n/a Yes
Text Messaging Templates n/a n/a n/a n/a Yes
Music
FM Radio Yes Yes - - -
Headphone Jack (3.5mm) Yes Yes Yes Yes -
Music Player n/a n/a n/a n/a Yes
Stereo Speakers - - - - Yes
Photo & Video
TV Output - - - Yes Yes
Power
Fast Charging - Yes Yes - -
Wireless Charging - Yes - - -
Productivity
Alarm n/a n/a n/a n/a Yes
Calculator n/a n/a n/a n/a Yes
Calendar n/a n/a n/a n/a Yes
Voice Memo n/a n/a n/a n/a Yes
Software
BREW n/a n/a n/a n/a Yes
Games n/a n/a n/a n/a Yes
Voice
HD Voice Yes Yes Yes - -
Speaker Phone Yes Yes Yes Yes Yes
  * Some versions only
  LG K20 / Harmony / Grace Boost Celero5G+ (2024) ZTE Blade X1 5G Apple iPhone 4 (GSM) Samsung SCH-A990
  X > < X > < X > < X > < X

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

 
Phone LG K20 / Harmony / Grace Boost Celero5G+ (2024) ZTE Blade X1 5G Apple iPhone 4 (GSM) Samsung SCH-A990

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