Features

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General
In The Box Handset, Charger, Battery, Earphones, User Guide  Handset, USB 3.0 Type C Cable, 5V/2A Adapter, Quick StartView More... Handset, Battery, Earphones, Charger, User Guide 
Model Number SM-J120GZDDINS  Z1221  SM-J210FZDGINS 
Model Name Galaxy J1 (4G)  ZUK Z1  Galaxy J2 Pro 
Color Gold  Space Grey  Gold 
Browse Type Smartphones  Smartphones  Smartphones 
SIM Type Dual Sim  Dual Sim  Dual Sim 
Hybrid Sim Slot No  Yes No 
Touchscreen Yes Yes Yes
OTG Compatible No  Yes Yes
Display Features
Display Size 11.43 cm (4.5 inch)  13.97 cm (5.5 inch)  12.7 cm (5 inch) 
Resolution 480 x 800 Pixels  1920 x 1080 pixels  1280 x 720 Pixels 
Resolution Type HD 
Display Type Super AMOLED 
OS & Processor Features
Operating System Android Lollipop 5.1.1  Android Lollipop 5.1.1  Android Marshmallow 6.0.1 
Processor Type 0 0 Quad Core 1.3GHz  Spreadtrum Quad-Core 1.5GHz 
Processor Core Quad Core  Quad Core  Quad Core 
Primary Clock Speed 1.3 GHz  2.5 GHz  1.5 GHz 
Memory & Storage Features
Internal Storage 8 GB  64 GB  16 GB 
RAM 1 GB  3 GB  2 GB 
Expandable Storage 128 GB 
Memory Card Slot Type Dedicated Slot  Hybrid Slot  Dedicated Slot 
Camera Features
Primary Camera Available Yes
Primary Camera 5.0MP  13MP  8MP 
Primary Camera Features Beauty Mode  CMOS, f/2.2 Aperture, Flash Support, Auto Focus 
Secondary Camera Available Yes
Secondary Camera 5MP 
Flash FRONT FLASH 
HD Recording Yes Yes
Full HD Recording Yes
Video Recording Yes
Optical Zoom Yes
Call Features
Phone Book Yes
Call Wait/Hold Yes Yes
Conference Call Yes Yes
Hands Free Yes
Call Divert Yes
Speaker Phone Yes
Speed Dialing Yes
Connectivity Features
Network Type 4G VOLTE, 3G, 2G  3G, 4G, 2G  4G, 3G, 2G 
Supported Networks 4G LTE, GSM  GSM, 4G LTE  4G LTE, GSM 
Bluetooth Support Yes
Wi-Fi Yes Yes
Audio Jack 3.5 
WAP Yes
USB Tethering Yes
Mini USB Version 2 
Other Details
Smartphone Yes
SIM Size Micro SIM  Micro SIM 
Removable Battery Yes
SMS Yes
Sensors Accelerometer Sensor, Proximity Sensor 
Keypad No 
MMS Yes
Multimedia Features
Audio Formats AAC, AAC+, eAAC+, MP3  AAC, AAC+, eAAC+, MP3 
FM Radio Yes
Video Formats MP4, M4V, 3GP, 3G2, ASF, AVI, FLV, MKV  MP4, M4V, 3GP, 3G2, ASF, AVI, FLV, MKV 
Battery & Power Features
Battery Capacity 2050 mAh  4100 mAh  2600 mAh 
Warranty
Warranty Summary 1 Year Manufacturer Warranty  1 year manufacturer warranty for device and 6 months manuView More... 1 Year for Mobile & 6 Months Accessories Warranty 
Warranty Service Type 1 Year Brand Warranty