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Phone Samsung Galaxy Alpha Nokia XR21 HTC ThunderBolt
Current U.S. Carriers (none) (none) (none)
Global Availability Released Released Released
Specifications 
Display Size 4.7" diag.
16 : 9
6.5" diag.
20 : 9
4.3" diag.
5 : 3
Display Resolution & Type 720 x 1280 pixels
(~312 ppi)
AMOLED
1080 x 2400 pixels
(~406 ppi)
LCD (TFT/TFD)
480 x 800 pixels
(~217 ppi)
LCD (TFT/TFD)
Display Refresh 60 Hz 60 Hz 60 Hz
Battery 1,860 mAh 4,800 mAh 1,400 mAh
Processor 2.5 GHz Qualcomm Snapdragon 801 (MSM8974-AC) Snapdragon 695 1 GHz Qualcomm Snapdragon S2 MSM8655
RAM 2 GB 6 GB 768 MB
Storage 32 GB 128 GB 8 GB
Main Camera 12 megapixel 64 megapixel 8 megapixel
Wide Camera - 8 megapixel -
Tele Camera - - -
Video Capture 4K UHD 1080p HD 720p HD
Front Camera 2 megapixel 16 megapixel 1 megapixel
Weight 4.06 oz
(115g)
8.16 oz
(231g)
5.78 oz
(164g)
Dimensions 5.21" x 2.58" x 0.26"
(132 x 66 x 6.7 mm)
6.61" x 3.09" x 0.41"
(168 x 78 x 10.4 mm)
4.8" x 2.6" x 0.52"
(122 x 66 x 13.2 mm)
Platform / OS Android Android Android
Network Bands

4G LTE: 1, 2, 3, 4, 5, 7, 17

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

5G: 1, 2, 3, 5, 7, 20, 25, 28, 40, 41, 66, 71, 77-C, 78, 79, 260, 261

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 20, 25, 26, 28, 32, 38, 39, 40, 41, 42, 43, 48, 66, 71

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

4G LTE: 13

CDMA: 850, 1900

Data Technology LTE (Cat 4) NR (5G) LTE (Cat 3)
Features 
Barometer - Yes -
Fingerprint Reader Yes Yes
stand-alone
-
Flashlight Yes Yes Yes
Ruggedized - Yes -
Water-Resistant - Yes
IPX8 (SCUBA)
-
Accessibility
Hearing Aid Compatible Yes
M3 (mostly compatible)
Yes
M3, T3 (mostly tele-coil compatible)
Yes
TTY/TDD (Digital) Yes - Yes
Connectivity
Bluetooth Yes Yes Yes
NFC Yes Yes -
USB Yes Yes
USB Type C
Yes
Micro-USB
Wi-Fi Yes
5 (802.11 a,ac,b,g,n)
Yes
6 (802.11 a,ac,ax,b,g,n)
Yes
4 (802.11 b,g,n)
Data & Network
Dual-SIM - Yes -
Input
Side Keys Yes Yes Yes
Touch Screen Yes
Capacitive
Yes
Capacitive
Yes
Capacitive
Memory
Memory Card Slot - - Yes
Music
FM Radio - Yes Yes
Headphone Jack (3.5mm) Yes Yes Yes
Stereo Speakers Yes - -
Photo & Video
DLNA - - Yes
TV Output Yes - -
Power
Fast Charging - Yes -
Voice
HD Voice Yes - -
Speaker Phone Yes Yes Yes
  Samsung Galaxy Alpha Nokia XR21 HTC ThunderBolt
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Phone Samsung Galaxy Alpha Nokia XR21 HTC ThunderBolt

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