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Phone Samsung SCH-A610 Samsung Knack U310 Google Pixel 3a XL Huawei M835 Ericsson R278d
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? 2.2" diag.
4 : 3
6" diag.
18 : 9
2.8" diag.
4 : 3
?
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
176 x 220 pixels
(~128 ppi)
LCD (TFT/TFD)
1080 x 2160 pixels
(~402 ppi)
AMOLED
240 x 320 pixels
(~143 ppi)
LCD (TFT/TFD)
101 x 40 pixels
Display Refresh ? ? 60 Hz 60 Hz ?
Battery 1,300 mAh 1,000 mAh 3,700 mAh 1,200 mAh ?
Processor ? ? 2 GHz Qualcomm Snapdragon 670 528 MHz Qualcomm MSM7625 ?
RAM ? ? 4 GB ? ?
Storage ? raw hardware ? raw hardware 64 GB ? raw hardware ? raw hardware
Main Camera Yes - 12 megapixel 3 megapixel -
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture - - 4K UHD ? -
Front Camera - - 8 megapixel - -
Weight 4.23 oz
(120g)
3.63 oz
(103g)
5.89 oz
(167g)
3.88 oz
(110g)
9.28 oz
(263g)
Dimensions 3.5" x 1.9" x 0.9"
(89 x 48 x 22.9 mm)
3.78" x 2.01" x 0.74"
(96 x 51 x 18.8 mm)
6.3" x 3" x 0.3"
(160 x 76 x 7.6 mm)
4.09" x 2.15" x 0.53"
(104 x 55 x 13.5 mm)
5.1" x 2" x 1"
(130 x 51 x 25.4 mm)
Form Factor Clamshell Clamshell Slab Slab Slab
Platform / OS (proprietary) (proprietary) Android Android (proprietary)
Network Bands

CDMA: 850, 1900

CDMA: 850, 1900

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 20, 25, 26, 28, 29, 30, 38, 40, 41, 66, 71

WCDMA: 1, 2, 4, 5, 8

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

CDMA: 850, 1700, 1900

TDMA: 850, 1900

AMPS: 850

Data Technology 1xRTT - LTE (Cat 11) EVDO rA -
Features 
Barometer - - Yes - -
Fingerprint Reader - - Yes
stand-alone
- -
Flashlight - - Yes - -
GPS / Location Yes Yes n/a n/a -
Accessibility
Adjustable Text Size - Yes n/a n/a -
Hearing Aid Compatible - Yes
M4, T4 (very tele-coil compatible)
Yes
M3, T3 (mostly tele-coil compatible)
Yes
M4, T3 (mostly tele-coil compatible)
-
Multiple Languages Yes Yes n/a n/a Yes
TTY/TDD (Digital) - Yes Yes Yes -
Alerts
Extra Display - Yes - - -
Ringer Profiles - - - - Yes
Connectivity
Bluetooth - - Yes Yes -
NFC - - Yes - -
USB - - Yes
USB Type C
Yes -
Wi-Fi - - Yes
5 (802.11 a,ac,b,g,n)
Yes
4 (802.11 b,g,n)
-
Contacts
Picture ID Yes - n/a n/a -
Ringer ID Yes - n/a n/a -
Voice Dialing Yes Yes n/a n/a -
Customization
Custom Graphics Yes - n/a n/a -
Custom Ringtones Yes - n/a n/a Yes
Real-Music Ringers - - n/a n/a -
Data & Network
Data Tethering Yes - n/a n/a Yes
WAP / Web Browser Yes - n/a n/a Yes
Input
Predictive Text Entry Yes Yes n/a n/a Yes
Side Keys Yes Yes Yes Yes Yes
Touch Screen - - Yes
Capacitive
Yes
Capacitive
-
Memory
Memory Card Slot - - - Yes -
Messaging
Email Client - - n/a n/a -
EMS / Picture Messaging Yes Yes n/a n/a -
Instant Messaging - - n/a n/a -
MMS Yes - n/a n/a -
Text Messaging Templates Yes - n/a n/a -
Music
Headphone Jack (3.5mm) - - Yes Yes -
Music Player - - n/a n/a -
Stereo Speakers - - Yes - -
Power
Fast Charging - - Yes - -
Productivity
Alarm Yes Yes n/a n/a Yes
Calculator Yes Yes n/a n/a -
Calendar Yes Yes n/a n/a -
To-Do List Yes - n/a n/a -
Voice Memo Yes - n/a n/a -
Software
BREW Yes - n/a n/a -
Games Yes - n/a n/a -
Voice
Call Screening - - Yes - -
HD Voice - - Yes - -
Headset Jack (2.5 mm) Yes Yes n/a n/a -
Speaker Phone - Yes Yes Yes -
  Samsung SCH-A610 Samsung Knack U310 Google Pixel 3a XL Huawei M835 Ericsson R278d
  X > < X > < X > < X > < X

NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Samsung SCH-A610 Samsung Knack U310 Google Pixel 3a XL Huawei M835 Ericsson R278d

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