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Phone ZTE Z331 Samsung Galaxy J7 (2017, GSM) / J7 Prime / Halo BlackBerry 7230 / 7210 Samsung Galaxy Rush TCL 40 XL / Jitterbug Smart 4
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size 2.4" diag.
4 : 3
5.5" diag.
16 : 9
? 3.5" diag.
5 : 3
6.8" diag.
20 : 9
Display Resolution & Type 176 x 220 pixels
(~117 ppi)
LCD (TFT/TFD)
720 x 1280 pixels
(~267 ppi)
LCD (TFT/TFD)
240 x 160 pixels
LCD (Color)
320 x 480 pixels
(~165 ppi)
LCD (TFT/TFD)
720 x 1600 pixels
(~260 ppi)
LCD (TFT/TFD)
Display Refresh ? 60 Hz ? 60 Hz 90 Hz
Battery 950 mAh 3,300 mAh ? 1,750 mAh 5,000 mAh
Processor ? 1.6 GHz Samsung Exynos 7870 ? 1 GHz Qualcomm MSM8655 2.3 GHz MediaTek Helio G37
RAM ? 2 GB ? 768 MB 4 GB
Storage ? raw hardware 16 GB * ? raw hardware 4 GB 128 GB
Main Camera 3 megapixel 8 megapixel - 3 megapixel 50 megapixel
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture QCIF (176 x 144) 1080p HD - VGA (640 x 480) 1080p HD
Front Camera - Yes - 1 megapixel 8 megapixel
Weight 4 oz
(113g)
5.8 oz
(164g)
4.9 oz
(139g)
4.2 oz
(119g)
6.88 oz
(195g)
Dimensions 3.84" x 2.02" x 0.69"
(98 x 51 x 17.5 mm)
5.96" x 3.01" x 0.34"
(151 x 76 x 8.6 mm)
4.4" x 2.9" x 0.94"
(112 x 74 x 23.9 mm)
4.84" x 2.36" x 0.47"
(123 x 60 x 11.9 mm)
6.61" x 3.01" x 0.35"
(168 x 76 x 8.8 mm)
Form Factor Clamshell Slab Slab Slab Slab
Platform / OS (proprietary) Android BlackBerry OS Android Android
Network Bands

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

4G LTE: 2, 3, 4, 5, 7, 12

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

*

GSM: 900, 1800, 1900

*

CDMA: 1900

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

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

Data Technology HSDPA 3.6 LTE (Cat 6) GPRS EVDO rA LTE (Cat 6)
Features 
Barometer - - - - Yes
Fingerprint Reader - - - - Yes
Flashlight - Yes - - Yes
GPS / Location Yes 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 Yes
Multiple Languages Yes n/a n/a n/a n/a
TTY/TDD (Digital) Yes Yes - Yes Yes
Alerts
Extra Display Yes - - - -
Ringer Profiles Yes - - - -
Connectivity
Bluetooth Yes
Classic Audio
Yes
Classic Audio
-
Yes
Classic Audio
Yes
Classic Audio
USB Yes
Micro-USB
Yes
Micro-USB
Yes Yes Yes
USB Type C
Wi-Fi - Yes
5 (802.11 a,ac,b,g,n)
- Yes
4 (802.11 a,b,g,n)
Yes
5 (802.11 a,ac,b,g,n)
Contacts
Picture ID Yes n/a n/a n/a n/a
Ringer ID Yes n/a n/a n/a n/a
Voice Dialing - n/a n/a n/a n/a
Customization
Custom Graphics Yes n/a n/a n/a n/a
Custom Ringtones Yes n/a n/a n/a n/a
Real-Music Ringers Yes n/a n/a n/a n/a
Data & Network
Data Tethering Yes n/a n/a n/a n/a
WAP / Web Browser Yes n/a n/a n/a n/a
Input
Predictive Text Entry Yes n/a n/a n/a n/a
Side Keys Yes Yes Yes Yes Yes
Text Keyboard, Hardware - - Yes - -
Touch Screen - Yes - Yes Yes
Memory
Memory Card Slot Yes Yes - Yes Yes
Messaging
Email Client Yes n/a n/a n/a n/a
Instant Messaging Yes n/a n/a n/a n/a
MMS Yes n/a n/a n/a n/a
Text Messaging Templates Yes n/a n/a n/a n/a
Music
FM Radio - Yes - - -
Headphone Jack (3.5mm) - Yes - Yes Yes
Music Player Yes n/a n/a n/a n/a
Stereo Speakers - - - - Yes
Power
Fast Charging - - - - Yes
Productivity
Alarm Yes n/a n/a n/a n/a
Calculator Yes n/a n/a n/a n/a
Calendar Yes n/a n/a n/a n/a
To-Do List - n/a n/a n/a n/a
Voice Memo Yes n/a n/a n/a n/a
Software
Games Yes n/a n/a n/a n/a
Java (J2ME) Yes n/a n/a n/a n/a
Voice
HD Voice - Yes - - Yes
Headset Jack (2.5 mm) - n/a n/a n/a n/a
Speaker Phone Yes Yes - Yes Yes
  ZTE Z331 Samsung Galaxy J7 (2017, GSM) / J7 Prime / Halo BlackBerry 7230 / 7210 Samsung Galaxy Rush TCL 40 XL / Jitterbug Smart 4
  X > < X > < X > < X > < X

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

 
Phone ZTE Z331 Samsung Galaxy J7 (2017, GSM) / J7 Prime / Halo BlackBerry 7230 / 7210 Samsung Galaxy Rush TCL 40 XL / Jitterbug Smart 4

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