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Phone Nokia Lumia 635 (CDMA) Alcatel 665 HTC Droid Eris Samsung Galaxy A23 5G Ericsson R520
Current U.S. Carriers (none) (none) (none) Verizon (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size 4.5" diag.
16 : 9
1.8" diag.
4 : 3
3.2" diag.
5 : 3
6.6" diag.
20 : 9
?
Display Resolution & Type 480 x 854 pixels
(~218 ppi)
LCD (TFT/TFD)
128 x 160 pixels
(~116 ppi)
LCD (TFT/TFD)
320 x 480 pixels
(~180 ppi)
LCD (TFT/TFD)
1080 x 2408 pixels
(~400 ppi)
LCD (TFT/TFD)
?
Display Refresh ? ? 60 Hz 120 Hz ?
Battery 1,830 mAh 650 mAh 1,300 mAh 5,000 mAh ?
Processor 1.2 GHz Qualcomm Snapdragon 400 (MSM8926) ? 528 MHz MSM7600 2.2 GHz Snapdragon 695 ?
RAM 512 MB 16 MB ? 4 GB ?
Storage 8 GB 32 MB ? raw hardware 64 GB ? raw hardware
Main Camera 5 megapixel 2 megapixel 5 megapixel 50 megapixel -
Wide Camera - - - 5 megapixel -
Tele Camera - - - - -
Video Capture 720p HD QCIF (176 x 144) CIF (352 x 288) 1080p HD -
Front Camera - - - 8 megapixel -
Weight 4.73 oz
(134g)
2.72 oz
(77g)
4.43 oz
(126g)
6.87 oz
(195g)
4.23 oz
(120g)
Dimensions 5.1" x 2.63" x 0.36"
(130 x 67 x 9.1 mm)
3.78" x 1.89" x 0.66"
(96 x 48 x 16.8 mm)
4.45" x 2.19" x 0.52"
(113 x 55 x 13.2 mm)
6.47" x 3.02" x 0.33"
(164 x 77 x 8.4 mm)
5.12" x 1.97" x 0.63"
(130 x 50 x 16 mm)
Form Factor Slab Clamshell Slab Slab Slab
Platform / OS Windows (proprietary) Android Android (proprietary)
Network Bands

4G LTE: 25, 26, 41

WCDMA: 1, 2, 5

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

GSM: 850, 1900

CDMA: 850, 1900

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

4G LTE: 1, 2, 3, 4, 5, 7, 12, 13, 14, 20, 25, 26, 29, 30, 38, 39, 40, 41, 48, 66, 71

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

GSM: 900, 1800, 1900

Data Technology LTE (Cat 3) - EVDO rA NR (5G) GPRS
Features 
Barometer - - - Yes -
Fingerprint Reader - - - Yes
stand-alone
-
Flashlight - - - Yes -
GPS / Location n/a - n/a n/a -
Water-Resistant - - - Yes
IPX7 (snorkeling)
-
Accessibility
Hearing Aid Compatible Yes
M3, T4 (very tele-coil compatible)
Yes
M4 (very compatible)
Yes
M3, T3 (mostly tele-coil compatible)
Yes
M3, T3 (mostly tele-coil compatible)
-
Multiple Languages n/a Yes n/a n/a Yes
TTY/TDD (Digital) Yes - Yes Yes -
Alerts
Extra Display - Yes - - -
Ringer Profiles - Yes - - Yes
Connectivity
Bluetooth Yes Yes Yes Yes Yes
Infrared (IR) - - - - Yes
Mobile Hotspot n/a - n/a n/a -
NFC - - - Yes -
USB Yes
Micro-USB
Yes
Micro-USB
Yes
Mini-USB
Yes
USB Type C
-
Wi-Fi Yes
4 (802.11 b,g,n)
- Yes
802.11 b,g
Yes
5 (802.11 a,ac,b,g,n)
-
Contacts
Picture ID n/a Yes n/a n/a -
Ringer ID n/a Yes n/a n/a -
Voice Dialing n/a - n/a n/a Yes
Customization
Custom Graphics n/a Yes n/a n/a -
Custom Ringtones n/a Yes n/a n/a Yes
Real-Music Ringers n/a Yes n/a n/a -
Data & Network
Data Tethering n/a - n/a n/a Yes
WAP / Web Browser n/a Yes n/a n/a Yes
Input
Predictive Text Entry n/a Yes n/a n/a Yes
Side Keys Yes Yes Yes Yes Yes
Touch Screen Yes
Capacitive
- Yes
Capacitive
Yes
Capacitive
-
Memory
Memory Card Slot Yes Yes Yes Yes -
Messaging
Email Client n/a - n/a n/a -
Instant Messaging n/a Yes n/a n/a -
MMS n/a Yes n/a n/a -
Text Messaging Templates n/a Yes n/a n/a Yes
Music
FM Radio Yes Yes - - -
Headphone Jack (3.5mm) Yes Yes Yes Yes -
Music Player n/a Yes n/a n/a -
Stereo Speakers - - - Yes -
Photo & Video
DLNA Yes - - - -
Power
Fast Charging - - - Yes -
Productivity
Alarm n/a Yes n/a n/a Yes
Calculator n/a Yes n/a n/a Yes
Calendar n/a Yes n/a n/a Yes
To-Do List n/a - n/a n/a -
Voice Memo n/a Yes n/a n/a Yes
Software
Games n/a Yes n/a n/a Yes
Java (J2ME) n/a Yes n/a n/a -
Voice
HD Voice - - - Yes -
Speaker Phone Yes Yes Yes Yes Yes
  * Some versions only
  Nokia Lumia 635 (CDMA) Alcatel 665 HTC Droid Eris Samsung Galaxy A23 5G Ericsson R520
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Nokia Lumia 635 (CDMA) Alcatel 665 HTC Droid Eris Samsung Galaxy A23 5G Ericsson R520

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