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Phone Samsung SCH-A610 AT&T Maestro 3 Samsung SCH-A990 BlackBerry Curve 8300 TCL 10 Pro
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? 6.5" diag.
20 : 9
? ? 6.5" diag.
19.5 : 9
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
720 x 1600 pixels
(~270 ppi)
LCD (TFT/TFD)
240 x 320 pixels
LCD (TFT/TFD)
320 x 240 pixels
LCD (TFT/TFD)
1080 x 2340 pixels
(~398 ppi)
AMOLED
Display Refresh ? 60 Hz ? ? 60 Hz
Battery 1,300 mAh 3,900 mAh 1,000 mAh ? 4,500 mAh
Processor ? 2 GHz MediaTek Helio A22 (MT6761) ? ? 2 GHz Qualcomm Snapdragon 675 (SM6150)
RAM ? 3 GB ? ? 6 GB
Storage ? raw hardware 32 GB ? raw hardware ? raw hardware 128 GB
Main Camera Yes 13 megapixel 3 megapixel 2 megapixel 64 megapixel
Wide Camera - 5 megapixel - - 16 megapixel
Tele Camera - - - - -
Video Capture - 1080p HD ? - 4K UHD
Front Camera - 5 megapixel - - 24 megapixel
Weight 4.23 oz
(120g)
6.24 oz
(177g)
4.4 oz
(125g)
3.92 oz
(111g)
6.6 oz
(187g)
Dimensions 3.5" x 1.9" x 0.9"
(89 x 48 x 22.9 mm)
6.58" x 3.03" x 0.33"
(167 x 77 x 8.4 mm)
3.8" x 1.88" x 0.82"
(97 x 48 x 20.8 mm)
4.2" x 2.36" x 0.61"
(107 x 60 x 15.5 mm)
6.24" x 2.85" x 0.36"
(159 x 72 x 9.2 mm)
Form Factor Clamshell Slab Clamshell Slab Slab
Platform / OS (proprietary) Android (proprietary) BlackBerry OS Android
Network Bands

CDMA: 850, 1900

4G LTE: 2, 4, 5, 12, 14, 30

CDMA: 850, 1900

GSM: 850, 900, 1800, 1900

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 25, 26, 28, 38, 40, 41, 66

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

Data Technology 1xRTT LTE (Cat 4) EVDO r0 EDGE LTE (Cat 6)
Features 
Barometer - Yes - - -
Fingerprint Reader - Yes
stand-alone
- - Yes
in-display (optical)
Flashlight - Yes Yes - Yes
GPS / Location Yes n/a Yes n/a n/a
Accessibility
Adjustable Text Size - n/a - n/a n/a
Hearing Aid Compatible - Yes
M4, T4 (very tele-coil compatible)
Yes
M3 (mostly compatible)
- Yes
M4, T3 (mostly tele-coil compatible)
Multiple Languages Yes n/a Yes n/a n/a
TTY/TDD (Digital) - - Yes Yes -
Alerts
Extra Display - - Yes - -
Ringer Profiles - - - Yes -
Connectivity
Bluetooth - Yes Yes Yes Yes
Infrared (IR) - - - - Yes
NFC - - - - Yes
USB - Yes
USB Type C
Yes Yes Yes
USB Type C
Wi-Fi - Yes
5 (802.11 a,ac,b,g,n)
- - Yes
5 (802.11 a,ac,b,g,n)
Contacts
Picture ID Yes n/a Yes n/a n/a
Ringer ID Yes n/a Yes n/a n/a
Voice Dialing Yes n/a Yes n/a n/a
Customization
Custom Graphics Yes n/a Yes n/a n/a
Custom Ringtones Yes n/a Yes n/a n/a
Real-Music Ringers - n/a Yes n/a n/a
Data & Network
Data Tethering Yes n/a Yes n/a n/a
WAP / Web Browser Yes n/a Yes n/a n/a
Input
Predictive Text Entry Yes n/a Yes n/a n/a
Side Keys Yes Yes Yes Yes Yes
Text Keyboard, Hardware - - - Yes -
Touch Screen - Yes
Capacitive
- - Yes
Capacitive
Memory
Memory Card Slot - Yes Yes Yes Yes
Messaging
Email Client - n/a - n/a n/a
EMS / Picture Messaging Yes n/a Yes n/a n/a
Instant Messaging - n/a - n/a n/a
MMS Yes n/a Yes n/a n/a
Text Messaging Templates Yes n/a Yes n/a n/a
Music
FM Radio - - - - Yes
Headphone Jack (3.5mm) - Yes - Yes Yes
Music Player - n/a Yes n/a n/a
Stereo Speakers - - Yes - -
Photo & Video
TV Output - - Yes - -
Power
Fast Charging - - - - Yes
Productivity
Alarm Yes n/a Yes n/a n/a
Calculator Yes n/a Yes n/a n/a
Calendar Yes n/a Yes n/a n/a
To-Do List Yes n/a - n/a n/a
Voice Memo Yes n/a Yes n/a n/a
Software
BREW Yes n/a Yes n/a n/a
Games Yes n/a Yes n/a n/a
Java (J2ME) - n/a - n/a n/a
Voice
HD Voice - Yes - - Yes
Headset Jack (2.5 mm) Yes n/a - n/a n/a
Push-To-Talk - - - Yes * -
Speaker Phone - Yes Yes Yes Yes
  * Some versions only
  Samsung SCH-A610 AT&T Maestro 3 Samsung SCH-A990 BlackBerry Curve 8300 TCL 10 Pro
  X > < X > < X > < X > < X

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

 
Phone Samsung SCH-A610 AT&T Maestro 3 Samsung SCH-A990 BlackBerry Curve 8300 TCL 10 Pro

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