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Phone ZTE Z432 / Altair 2 BlackBerry Classic (CDMA) Samsung Galaxy S21 Samsung Galaxy Grand Prime (CDMA)
Current U.S. Carriers (none) (none) Verizon (none)
Global Availability Released Released Released Released
Specifications 
Display Size 2.4" diag.
4 : 3
3.5" diag.
1 : 1
6.2" diag.
20 : 9
5" diag.
16 : 9
Display Resolution & Type 320 x 240 pixels
(~167 ppi)
LCD (TFT/TFD)
720 x 720 pixels
(~291 ppi)
LCD (TFT/TFD)
1080 x 2400 pixels
(~424 ppi)
AMOLED
540 x 960 pixels
(~220 ppi)
LCD (TFT/TFD)
Display Refresh ? ? 120 Hz 60 Hz
Battery 900 mAh 2,515 mAh 4,000 mAh 2,600 mAh
Processor Qualcomm QSC6270 1.5 GHz Qualcomm Snapdragon S4 Plus MSM8960 2.8 GHz Qualcomm Snapdragon 888 1.2 GHz Qualcomm Snapdragon 410 (MSM8916)
RAM 128 MB 2 GB 8 GB 1.5 GB
Storage 256 MB 16 GB 128 GB * 8 GB
Main Camera 2 megapixel 8 megapixel 12 megapixel 8 megapixel
Wide Camera - - 12 megapixel -
Tele Camera - - 64 megapixel -
Video Capture QVGA (320 x 240) 1080p HD 8K 1080p HD
Front Camera - 2 megapixel 10 megapixel 5 megapixel
Weight 3.24 oz
(92g)
6.28 oz
(178g)
6.03 oz
(171g)
5.5 oz
(156g)
Dimensions 4.48" x 2.38" x 0.44"
(114 x 60 x 11.2 mm)
5.16" x 2.85" x 0.4"
(131 x 72 x 10.2 mm)
5.97" x 2.8" x 0.31"
(152 x 71 x 7.9 mm)
5.7" x 2.84" x 0.34"
(145 x 72 x 8.6 mm)
Form Factor Slab Slab Slab Slab
Platform / OS (proprietary) BlackBerry 10 Android Android
Network Bands

WCDMA: 2, 5

GSM: 850, 1900

4G LTE: 3, 4, 13

WCDMA: 1, 2, 5, 8

CDMA: 850, 1900

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

4G LTE: 2, 4, 5, 12, 25, 26, 41

CDMA: 800, 850, 1900

*

Data Technology HSDPA 3.6 LTE (Cat 3) NR (5G) LTE (Cat 4)
Features 
Barometer - - Yes -
Fingerprint Reader - - Yes
in-display (ultrasonic)
-
Flashlight - - Yes Yes
GPS / Location Yes n/a n/a n/a
Water-Resistant - - Yes
IPX8 (SCUBA)
-
Accessibility
Adjustable Text Size Yes 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
Alerts
Ringer Profiles - Yes - -
Connectivity
Bluetooth Yes Yes Yes Yes
Mobile Hotspot - n/a n/a n/a
NFC - Yes Yes Yes
USB Yes
Micro-USB
Yes
Micro-USB
Yes
USB Type C
Yes
Micro-USB
Wi-Fi - Yes
4 (802.11 a,b,g,n)
Yes
6 (802.11 a,ac,ax,b,g,n)
Yes
4 (802.11 b,g,n)
Contacts
Picture ID Yes 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 - 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
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
Text Keyboard, Hardware 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 - 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 - Yes
Headphone Jack (3.5mm) Yes Yes - Yes
Music Player Yes n/a n/a n/a
Stereo Speakers - - Yes -
Photo & Video
DLNA - Yes - -
Miracast - Yes - -
TV Output - Yes Yes -
Power
Fast Charging - - 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
To-Do List - n/a n/a n/a
Voice Memo Yes n/a n/a n/a
Software
Games - n/a n/a n/a
Voice
HD Voice - - Yes Yes
Speaker Phone Yes Yes Yes Yes
  ZTE Z432 / Altair 2 BlackBerry Classic (CDMA) Samsung Galaxy S21 Samsung Galaxy Grand Prime (CDMA)
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone ZTE Z432 / Altair 2 BlackBerry Classic (CDMA) Samsung Galaxy S21 Samsung Galaxy Grand Prime (CDMA)

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