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Phone AT&T Maestro 3 Samsung Galaxy J2 / J2 Pure / J2 Dash TCL 40 XL / Jitterbug Smart 4 LG LX-400 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
5" diag.
16 : 9
6.8" diag.
20 : 9
1.8" diag.
4 : 3
6.5" diag.
19.5 : 9
Display Resolution & Type 720 x 1600 pixels
(~270 ppi)
LCD (TFT/TFD)
540 x 960 pixels
(~220 ppi)
LCD (TFT/TFD)
720 x 1600 pixels
(~260 ppi)
LCD (TFT/TFD)
128 x 160 pixels
(~117 ppi)
LCD (TFT/TFD)
1080 x 2340 pixels
(~398 ppi)
AMOLED
Display Refresh 60 Hz 60 Hz 90 Hz ? 60 Hz
Battery 3,900 mAh 2,600 mAh 5,000 mAh 1,000 mAh 4,500 mAh
Processor 2 GHz MediaTek Helio A22 (MT6761) 1.4 GHz Samsung Exynos 7570 2.3 GHz MediaTek Helio G37 ? 2 GHz Qualcomm Snapdragon 675 (SM6150)
RAM 3 GB 2 GB 4 GB ? 6 GB
Storage 32 GB 16 GB 128 GB ? raw hardware 128 GB
Main Camera 13 megapixel 8 megapixel 50 megapixel 1 megapixel 64 megapixel
Wide Camera 5 megapixel - - - 16 megapixel
Tele Camera - - - - -
Video Capture 1080p HD 1080p HD 1080p HD QCIF (176 x 144) 4K UHD
Front Camera 5 megapixel 5 megapixel 8 megapixel - 24 megapixel
Weight 6.24 oz
(177g)
5.43 oz
(154g)
6.88 oz
(195g)
3.42 oz
(97g)
6.6 oz
(187g)
Dimensions 6.58" x 3.03" x 0.33"
(167 x 77 x 8.4 mm)
5.65" x 2.84" x 0.35"
(144 x 72 x 8.9 mm)
6.61" x 3.01" x 0.35"
(168 x 76 x 8.8 mm)
3.66" x 1.88" x 0.82"
(93 x 48 x 20.8 mm)
6.24" x 2.85" x 0.36"
(159 x 72 x 9.2 mm)
Form Factor Slab Slab Slab Clamshell Slab
Platform / OS Android Android Android (proprietary) Android
Network Bands

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

4G LTE: 2, 3, 4, 5, 7, 12, 14, 66, 71

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

*

4G LTE: 2, 4, 5, 12, 13, 25, 26, 41, 66, 71

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

CDMA: 850, 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 LTE (Cat 4) LTE (Cat 4) LTE (Cat 6) EVDO rA LTE (Cat 6)
Features 
Barometer Yes - Yes - -
Fingerprint Reader Yes
stand-alone
- Yes - Yes
in-display (optical)
Flashlight Yes Yes Yes - Yes
GPS / Location n/a n/a n/a Yes n/a
Accessibility
Adjustable Text Size n/a n/a n/a Yes n/a
Hearing Aid Compatible Yes Yes Yes Yes Yes
Multiple Languages n/a n/a n/a Yes n/a
TTY/TDD (Digital) - Yes Yes Yes -
Alerts
Extra Display - - - Yes -
Connectivity
Bluetooth Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
Infrared (IR) - - - - Yes
NFC - - - - Yes
USB Yes
USB Type C
Yes
Micro-USB
Yes
USB Type C
Yes
Micro-USB
Yes
USB Type C
Wi-Fi Yes
5 (802.11 a,ac,b,g,n)
Yes
4 (802.11 b,g,n)
Yes
5 (802.11 a,ac,b,g,n)
- Yes
5 (802.11 a,ac,b,g,n)
Contacts
Picture ID n/a n/a n/a Yes n/a
Ringer ID n/a n/a n/a Yes n/a
Voice Dialing n/a n/a n/a Yes n/a
Customization
Custom Graphics n/a n/a n/a Yes n/a
Custom Ringtones n/a n/a n/a Yes n/a
Real-Music Ringers n/a n/a n/a Yes n/a
Data & Network
Data Tethering n/a n/a n/a Yes n/a
WAP / Web Browser n/a n/a n/a Yes n/a
Input
Predictive Text Entry n/a n/a n/a Yes n/a
Side Keys Yes Yes Yes Yes Yes
Touch Screen Yes Yes Yes - Yes
Memory
Memory Card Slot Yes Yes Yes - Yes
Messaging
Email Client n/a n/a n/a Yes n/a
Instant Messaging n/a n/a n/a Yes n/a
Text Messaging Templates n/a n/a n/a Yes n/a
Music
FM Radio - - - - Yes
Headphone Jack (3.5mm) Yes Yes Yes - Yes
Stereo Speakers - - Yes - -
Power
Fast Charging - - Yes - Yes
Productivity
Alarm n/a n/a n/a Yes n/a
Calculator n/a n/a n/a Yes n/a
Calendar n/a n/a n/a Yes n/a
Voice Memo n/a n/a n/a Yes n/a
Software
Games n/a n/a n/a Yes n/a
Java (J2ME) n/a n/a n/a Yes n/a
Voice
HD Voice Yes - Yes - Yes
Headset Jack (2.5 mm) n/a n/a n/a Yes n/a
Push-To-Talk - - - Yes -
Speaker Phone Yes Yes Yes Yes Yes
  AT&T Maestro 3 Samsung Galaxy J2 / J2 Pure / J2 Dash TCL 40 XL / Jitterbug Smart 4 LG LX-400 TCL 10 Pro
  X > < X > < X > < X > < X

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

 
Phone AT&T Maestro 3 Samsung Galaxy J2 / J2 Pure / J2 Dash TCL 40 XL / Jitterbug Smart 4 LG LX-400 TCL 10 Pro

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