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Phone Alcatel Idol 4S Samsung DoubleTime Ericsson T66 LG K40 / Harmony 3 Samsung Galaxy J3 (2017, GSM) / J3 Prime / Express Prime 2 / Amp Prime 2 / Sol 2
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Not yet released Released Released Released Released
Specifications 
Display Size 5.5" diag.
16 : 9
3.2" diag.
5 : 3
? 5.7" diag.
18 : 9
5" diag.
16 : 9
Display Resolution & Type 1440 x 2560 pixels
(~534 ppi)
AMOLED
320 x 480 pixels
(~180 ppi)
LCD (TFT/TFD)
? 720 x 1440 pixels
(~282 ppi)
LCD (TFT/TFD)
720 x 1280 pixels
(~294 ppi)
LCD (TFT/TFD)
Display Refresh 60 Hz 60 Hz ? 60 Hz 60 Hz
Battery 3,000 mAh 1,200 mAh ? 3,000 mAh 2,600 mAh
Processor 1.8 GHz Qualcomm Snapdragon 652 (MSM8976) 600 MHz Qualcomm ? 1.8 GHz Qualcomm Snapdragon 450 1.4 GHz Samsung Exynos 7 Quad (7570)
RAM 3 GB ? ? 2 GB 1.5 GB
Storage 32 GB ? raw hardware ? raw hardware 32 GB 16 GB
Main Camera 16 megapixel 3 megapixel - 13 megapixel 5 megapixel
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture 4K UHD QVGA (320 x 240) - 1080p HD 1080p HD
Front Camera 8 megapixel - - 5 megapixel 2 megapixel
Weight 5.26 oz
(149g)
5.22 oz
(148g)
2.08 oz
(59g)
5.11 oz
(145g)
5.2 oz
(147g)
Dimensions 6.06" x 2.97" x 0.28"
(154 x 75 x 7 mm)
4.45" x 2.44" x 0.59"
(113 x 62 x 15 mm)
3.62" x 1.61" x 0.69"
(92 x 41 x 17.5 mm)
6.02" x 2.83" x 0.32"
(153 x 72 x 8.1 mm)
5.54" x 2.76" x 0.34"
(141 x 70 x 8.6 mm)
Form Factor Slab Clamshell Slab Slab Slab
Platform / OS Android Android (proprietary) Android Android
Network Bands

4G LTE: 2, 4, 5, 7, 12, 17

WCDMA: 1, 2, 4, 5

GSM: 850, 900, 1800, 1900

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

GSM: 900, 1800, 1900

4G LTE: 2, 4, 5, 12, 13, 14, 25, 26, 29, 30, 41, 66, 71

WCDMA: 2, 4, 5

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

*

4G LTE: 2, 4, 5, 12

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

*

Data Technology LTE (Cat 4) HSPA 7.2 - LTE (Cat 6) LTE (Cat 4)
Features 
Fingerprint Reader Yes * - - Yes
stand-alone
-
Flashlight Yes - - Yes Yes
GPS / Location n/a n/a - n/a n/a
Accessibility
Adjustable Text Size n/a n/a - n/a n/a
Hearing Aid Compatible Yes Yes - Yes Yes
Multiple Languages n/a n/a Yes n/a n/a
TTY/TDD (Digital) Yes Yes - Yes Yes
Alerts
Ringer Profiles - - Yes - -
Connectivity
Bluetooth Yes
Classic Audio
Yes
Classic Audio
-
Yes
Classic Audio
Yes
Classic Audio
Mobile Hotspot n/a n/a - n/a n/a
NFC Yes - - Yes * -
USB Yes
Micro-USB
Yes
Micro-USB
- Yes
Micro-USB
Yes
Micro-USB
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 n/a
Ringer ID n/a n/a - n/a n/a
Voice Dialing n/a n/a - n/a n/a
Customization
Custom Graphics n/a n/a Yes n/a n/a
Custom Ringtones n/a n/a Yes n/a n/a
Real-Music Ringers n/a n/a - n/a n/a
Data & Network
Data Tethering n/a n/a - n/a n/a
Dual-SIM Yes * - - - -
WAP / Web Browser n/a n/a Yes n/a n/a
Input
Predictive Text Entry n/a n/a Yes n/a n/a
Side Keys Yes Yes Yes Yes Yes
Text Keyboard, Hardware - Yes - - -
Touch Screen Yes Yes - Yes Yes
Memory
Memory Card Slot Yes Yes - Yes Yes
Messaging
Email Client n/a n/a - n/a n/a
EMS / Picture Messaging n/a n/a Yes n/a n/a
Instant Messaging n/a n/a - n/a n/a
MMS n/a n/a - n/a n/a
Text Messaging Templates n/a n/a Yes n/a n/a
Music
FM Radio - - - Yes Yes
Headphone Jack (3.5mm) Yes Yes - Yes Yes
Music Player n/a n/a - n/a n/a
Stereo Speakers Yes - - - -
Photo & Video
DLNA - - - Yes -
Miracast Yes - - - -
Power
Fast Charging Yes - - - -
Productivity
Alarm n/a n/a Yes n/a n/a
Calculator n/a n/a Yes n/a n/a
Calendar n/a n/a Yes n/a n/a
To-Do List n/a n/a Yes n/a n/a
Voice Memo n/a n/a - n/a n/a
Software
Games n/a n/a Yes n/a n/a
Voice
HD Voice Yes - - Yes Yes
Speaker Phone Yes Yes - Yes Yes
  * Some versions only
  Alcatel Idol 4S Samsung DoubleTime Ericsson T66 LG K40 / Harmony 3 Samsung Galaxy J3 (2017, GSM) / J3 Prime / Express Prime 2 / Amp Prime 2 / Sol 2
  X > < X > < X > < X > < X

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

 
Phone Alcatel Idol 4S Samsung DoubleTime Ericsson T66 LG K40 / Harmony 3 Samsung Galaxy J3 (2017, GSM) / J3 Prime / Express Prime 2 / Amp Prime 2 / Sol 2

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