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Phone ZTE Agent HTC Desire 530 Alcatel Idol 4S Samsung Galaxy S21
Current U.S. Carriers (none) (none) (none) Verizon
Global Availability Released Released Not yet released Released
Specifications 
Display Size 2.4" diag.
4 : 3
5" diag.
16 : 9
5.5" diag.
16 : 9
6.2" diag.
20 : 9
Display Resolution & Type 240 x 320 pixels
(~167 ppi)
LCD (TFT/TFD)
720 x 1280 pixels
(~294 ppi)
LCD (TFT/TFD)
1440 x 2560 pixels
(~534 ppi)
AMOLED
1080 x 2400 pixels
(~424 ppi)
AMOLED
Display Refresh ? 60 Hz 60 Hz 120 Hz
Battery 900 mAh 2,200 mAh 3,000 mAh 4,000 mAh
Processor ? 1.1 GHz Qualcomm Snapdragon 210 (MSM8909) 1.8 GHz Qualcomm Snapdragon 652 (MSM8976) 2.8 GHz Qualcomm Snapdragon 888
RAM ? 1.5 GB 3 GB 8 GB
Storage ? raw hardware 16 GB 32 GB 128 GB *
Main Camera 1 megapixel 8 megapixel 16 megapixel 12 megapixel
Wide Camera - - - 12 megapixel
Tele Camera - - - 64 megapixel
Video Capture ? 720p HD 4K UHD 8K
Front Camera - 5 megapixel 8 megapixel 10 megapixel
Weight 3.53 oz
(100g)
4.94 oz
(140g)
5.26 oz
(149g)
6.03 oz
(171g)
Dimensions 4.3" x 1.9" x 0.6"
(109 x 48 x 15.2 mm)
5.78" x 2.79" x 0.33"
(147 x 71 x 8.3 mm)
6.06" x 2.97" x 0.28"
(154 x 75 x 7 mm)
5.97" x 2.8" x 0.31"
(152 x 71 x 7.9 mm)
Form Factor Slab Slab Slab Slab
Platform / OS (proprietary) Android Android Android
Network Bands

CDMA: 850, 1700, 1900

4G LTE: 2, 4, 5, 7, 12, 13

WCDMA: 1, 2, 4, 5

CDMA: 850, 1900

GSM: 850, 900, 1800, 1900

*

4G LTE: 2, 4, 5, 7, 12, 17

WCDMA: 1, 2, 4, 5

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 1xRTT LTE (Cat 4) LTE (Cat 4) NR (5G)
Features 
Barometer - - - Yes
Fingerprint Reader - - Yes * Yes
in-display (ultrasonic)
Flashlight - Yes Yes Yes
GPS / Location Yes n/a n/a n/a
Water-Resistant - - - Yes
IPX8 (SCUBA)
Accessibility
Adjustable Text Size - n/a n/a n/a
Hearing Aid Compatible Yes Yes Yes Yes
Multiple Languages Yes n/a n/a n/a
TTY/TDD (Digital) Yes Yes Yes Yes
Connectivity
Bluetooth Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
Mobile Hotspot - n/a n/a n/a
NFC - - Yes Yes
USB Yes
Micro-USB
Yes
Micro-USB
Yes
Micro-USB
Yes
USB Type C
Wi-Fi - Yes
4 (802.11 b,g,n)
Yes
5 (802.11 a,ac,b,g,n)
Yes
6 (802.11 a,ac,ax,b,g,n)
Contacts
Picture ID - n/a n/a n/a
Ringer ID Yes n/a n/a n/a
Voice Dialing - n/a n/a n/a
Customization
Custom Graphics Yes n/a n/a n/a
Custom Ringtones Yes n/a n/a n/a
Real-Music Ringers Yes n/a n/a n/a
Data & Network
Data Tethering - n/a n/a n/a
Dual-SIM - - Yes * -
WAP / Web Browser Yes n/a n/a n/a
Input
Predictive Text Entry Yes n/a n/a n/a
Side Keys Yes Yes Yes Yes
Touch Screen - Yes Yes Yes
Memory
Memory Card Slot Yes Yes Yes -
Messaging
Email Client Yes n/a n/a n/a
Instant Messaging Yes n/a n/a n/a
MMS Yes n/a n/a n/a
Text Messaging Templates Yes n/a n/a n/a
Music
FM Radio - Yes - -
Headphone Jack (3.5mm) Yes Yes Yes -
Music Player Yes n/a n/a n/a
Stereo Speakers - - Yes Yes
Photo & Video
Miracast - - Yes -
TV Output - - - Yes
Power
Fast Charging - - Yes Yes
Wireless Charging - - - Yes
Productivity
Alarm Yes n/a n/a n/a
Calculator Yes n/a n/a n/a
Calendar Yes n/a n/a n/a
Voice Memo Yes n/a n/a n/a
Software
BREW Yes n/a n/a n/a
Games Yes n/a n/a n/a
Voice
HD Voice - - Yes Yes
Speaker Phone Yes Yes Yes Yes
  * Some versions only
  ZTE Agent HTC Desire 530 Alcatel Idol 4S Samsung Galaxy S21
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone ZTE Agent HTC Desire 530 Alcatel Idol 4S Samsung Galaxy S21

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