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Phone Apple iPhone 6 AT&T Vista Kyocera Candid KX16 Samsung Galaxy S21 Palm Treo 600 (CDMA)
Current U.S. Carriers (none) (none) (none) Verizon (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size 4.7" diag.
16 : 9
5.5" diag.
18 : 9
? 6.2" diag.
20 : 9
?
Display Resolution & Type 750 x 1334 pixels
(~326 ppi)
LCD (TFT/TFD)
720 x 1440 pixels
(~293 ppi)
LCD (TFT/TFD)
128 x 128 pixels
LCD (STN)
1080 x 2400 pixels
(~424 ppi)
AMOLED
160 x 160 pixels
LCD (Color)
Display Refresh 60 Hz 60 Hz ? 120 Hz ?
Battery 1,810 mAh 2,450 mAh 900 mAh 4,000 mAh ?
Processor Apple A8 2 GHz MediaTek Helio A22 (MT6761V) ? 2.8 GHz Qualcomm Snapdragon 888 ?
RAM 1 GB 3 GB ? 8 GB ?
Storage 16 GB * 32 GB ? raw hardware 128 GB * ? raw hardware
Main Camera 8 megapixel 8 megapixel Yes 12 megapixel Yes
Wide Camera - - - 12 megapixel -
Tele Camera - - - 64 megapixel -
Video Capture 1080p HD 1080p HD - 8K -
Front Camera 1 megapixel 5 megapixel - 10 megapixel -
Weight 4.55 oz
(129g)
5.51 oz
(156g)
3.9 oz
(111g)
6.03 oz
(171g)
6.2 oz
(176g)
Dimensions 5.44" x 2.64" x 0.27"
(138 x 67 x 6.9 mm)
5.88" x 2.82" x 0.35"
(149 x 72 x 8.9 mm)
3.54" x 1.89" x 0.98"
(90 x 48 x 24.9 mm)
5.97" x 2.8" x 0.31"
(152 x 71 x 7.9 mm)
4.41" x 2.36" x 0.87"
(112 x 60 x 22.1 mm)
Form Factor Slab Slab Clamshell Slab Slab
Platform / OS iOS Android (proprietary) Android Palm OS
Network Bands

4G LTE: 1, 2, 3, 4, 5, 7, 8, 13, 17, 25, 26, 41

WCDMA: 1, 2, 4, 5, 8

CDMA: 850, 1700, 1900

GSM: 850, 900, 1800, 1900

*

4G LTE: 2, 3, 4, 5, 7, 12, 14, 20, 30

WCDMA: 1, 2, 4, 5, 8

CDMA: 850, 1900

AMPS: 850

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 LTE (Cat 4) LTE (Cat 4) 1xRTT NR (5G) 1xRTT
Features 
Barometer - - - Yes -
Fingerprint Reader Yes - - Yes
in-display (ultrasonic)
-
Flashlight - Yes Yes Yes -
GPS / Location n/a n/a Yes n/a n/a
Water-Resistant - - - Yes
IPX8 (SCUBA)
-
Accessibility
Adjustable Text Size n/a n/a - n/a n/a
Hearing Aid Compatible Yes Yes - Yes -
Multiple Languages n/a n/a Yes n/a n/a
TTY/TDD (Digital) Yes - Yes Yes Yes
Alerts
Extra Display - - Yes - -
Connectivity
Bluetooth Yes Yes - Yes -
Infrared (IR) - - - - Yes
Mobile Hotspot n/a n/a - n/a n/a
NFC Yes - - Yes -
USB Yes Yes
USB Type C
- Yes
USB Type C
Yes
Wi-Fi Yes
5 (802.11 a,ac,b,g,n)
Yes - Yes
6 (802.11 a,ac,ax,b,g,n)
-
Contacts
Picture ID n/a n/a Yes n/a n/a
Ringer ID n/a n/a Yes n/a n/a
Voice Dialing n/a n/a Yes n/a n/a
Customization
Custom Graphics n/a n/a Yes n/a n/a
Custom Ringtones n/a n/a Yes n/a n/a
Real-Music Ringers n/a n/a - n/a n/a
Data & Network
Data Tethering n/a n/a Yes n/a n/a
WAP / Web Browser n/a n/a Yes n/a n/a
Input
Predictive Text Entry n/a n/a Yes n/a n/a
Side Keys Yes Yes Yes Yes Yes
Text Keyboard, Hardware - - - - Yes
Touch Screen Yes Yes - Yes Yes
Memory
Memory Card Slot - Yes - - Yes
Messaging
Email Client n/a n/a - n/a n/a
EMS / Picture Messaging n/a n/a Yes n/a n/a
Instant Messaging n/a n/a - n/a n/a
MMS n/a n/a Yes n/a n/a
Text Messaging Templates n/a n/a Yes n/a n/a
Music
Headphone Jack (3.5mm) Yes Yes - - -
Music Player n/a n/a - n/a n/a
Stereo Speakers - - - Yes -
Photo & Video
TV Output Yes - - Yes -
Power
Fast Charging - - - Yes -
Wireless Charging - - - Yes -
Productivity
Alarm n/a n/a Yes n/a n/a
Calculator n/a n/a Yes n/a n/a
Calendar n/a n/a Yes n/a n/a
To-Do List n/a n/a - n/a n/a
Voice Memo n/a n/a Yes n/a n/a
Software
BREW n/a n/a Yes n/a n/a
Games n/a n/a Yes n/a n/a
Voice
HD Voice Yes Yes - Yes -
Headset Jack (2.5 mm) n/a n/a Yes n/a n/a
Speaker Phone Yes Yes Yes Yes Yes
  Apple iPhone 6 AT&T Vista Kyocera Candid KX16 Samsung Galaxy S21 Palm Treo 600 (CDMA)
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Apple iPhone 6 AT&T Vista Kyocera Candid KX16 Samsung Galaxy S21 Palm Treo 600 (CDMA)

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