How to Hard/Factory Reset | Bypass screen lock on Samsung SCH-I939D?

All tutorials for Samsung SCH-I939D

How to Hard Reset on Samsung SCH-I939D?

Make sure you turned off your phone. Hold down the Power key, the Volume Up key and the Home Button for a while. Wait until the Samsung or Android logo appears. Release all the buttons. Now, you'll see...

How to Factory Reset through menu on Samsung SCH-I939D?

The device must be on. Go to the "Settings". In Settings choose "Backup & Reset". After that, go for "Factory data reset". Press "Reset device" to finish...

How to Flash Stock Firmware on Samsung SCH-I939D?

First, download to your PC: Odin3 latest version, Firmware, Samsung Kies, and Samsung Drivers: Samsung Kies Odin3 latest version Samsung Drivers With the phone turned off press and hold the Volume down key, the...

Top 5 secret codes for Samsung SCH-I939D

The first is :*#7353*#. Use this code to open the Quick Test menu that allows you to test different options of your device. The second is :*#0*#. Use this code to enter the General Test Mode where you can test...

Enable Developer mode & USB debugging on Samsung SCH-I939D

Turn on your device and open "Settings". In Settings select "About Phone". Click on "Build number" seven times and go back to "Settings". Finally, select Developer...

How to take screenshot on Samsung SCH-I939D?

The device must be switched on. Choose what you want to capture. Then press the Power key and the Volume down button at one time. Great! Now you have a new screenshot.

Overview

Samsung SCH-I939D runs on the processor 1.4GHz Samsung E x ynos 4412 with Single-core . It has internal memory 16GB and RAM (RAM) 1GB and supports microSD, up to 64 GB (dedicated slot). This model also has 3.5mm jack, supports Bluetooth version 4.0, A2DP and GPS technology Yes, with A-GPS . The USB port supports microUSB 2.0 and Wi-Fi 802.11 b/g/n, hotspot . Its technical characteristics are also the screen size 4.8 inches, (~65.1% screen-to-body ratio), the resolution 720 x 1280 pixels, (~306 ppi density) and the type Super AMOLED capacitive touchscreen.

SpecificationSamsung SCH-I939DGalaxy S3 Duos

Model and Features
Model	Samsung SCH-I939D
Series	Galaxy S3 Duos
Release Date	January, 2015
Body Depth	9.9 mm (0.39 in)
Body Dimensions	136,6 x 70,6 mm (5.35 x 2.75 in)
Body Weight	144.5 g (5.09 oz)
OS	Android Jelly Bean 4.3
Hardware
CPU	1.4GHz Samsung E x ynos 4412
CPU Cores	Single-core
RAM	1GB
Internal Memory	16GB
External Memory	microSD, up to 64 GB (dedicated slot)
Network and Data
SIM	2 Micro-SIM
2G bands	GSM 900/1800/1900MHz
3G bands	-
4G bands	-
5G bands	-
Technology Data	GPRS/EDGE
Display
Screen size	4.8 inches, (~65.1% screen-to-body ratio)
Type	Super AMOLED capacitive touchscreen
Resolution	720 x 1280 pixels, (~306 ppi density)
Colors	16M colors
Battery and Keyboard
Battery	Removable Li-Ion 2130 mAh
Physical keyboard	-
Interfaces
Audio output	3.5mm jack
Bluetooth	version 4.0, A2DP
DLNA	-
GPS	Yes, with A-GPS
Infrared port	-
NFC	-
USB	microUSB 2.0
WLAN	Wi-Fi 802.11 b/g/n, hotspot