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Unlock Samsung Galaxy S4 Duos

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How to unlock your phone Samsung?

Phones from this manufacturer is also equipped with a function of blocking access via a special security code that you can easily forget ... If you came is the case (or someone else has locked your phone, anything can happen) and you do not know how to unlock your phone, set itself on a computer program called Samsung @ home 9.41. With its help you can easily cope with this problem. Functionality of this tool is simple enough, and you can effortlessly deal with its settings.

How to unlock Samsung Galaxy S4 Duos?

1. Unlock Samsung Galaxy S4 Duos, locked by the operator.

2. Unlock Samsung Galaxy S4 Duos, depending on the manufacturer.

3. Conduct unlock SIM card.

4. Restore the phone capacity, which has been locked memory.

5. Unlock java games

6. Remove the graphic lock, password from the smartphone



How to unlock the phone, locked the operator?
This type of blocking is used by a mobile operator to make it impossible to use your phone on another operator's network. When using a phone with a SIM card from another operator, you need to enter a password or unlock code.
The operator blocks the phone by IMEI (a number that is unique for each device). To unlock your phone, you may need to use the services of sites that for little money will give you an unlock code to change the operator or network.


Unlock your phone, depending on the manufacturer.
On some phones, you can lock the screen using a password that you set yourself. But what if you forgot this password? To unlock your phone, you need to do a factory reset on your phone.



Unlocking phone SIM card
A small plastic card with a chip in the middle - it's indispensable device without which the mobile phone is simply useless as such. It is, of course, on the SIM card. The chip, which it applies, although the small size, but allows you to keep a certain amount of information, which is often confidential. For the safety of the data is also used to protect the technology with the help of the so-called PIN-code that is requested to be turned off. If you unsuccessfully enter the PIN three times, the mobile device will prompt you for a different code, the so-called PUK-code is. It usually consists of eight digits and is provided to you together with the SIM card. If you can not use the phone because of the ignorance of the PIN-code, just use the PUK-code. The PUK code can be found in the documents for the SIM card, if they are lost, then the first thing to do is call the mobile operator. Or contact your nearest customer service center with your SIM card and phone. There you will be prompted with the PUK code.

Unlock your phone memory
Some phone models allow you to separately deny access to various files located in the phone memory or on the memory card. If you have forgotten the password to access the memory, you need to use additional software. To do this, you need a cable to connect your phone to your computer. One of the programs with which you can unlock is JetFlash Recovery Tool. You can download it from the official website of the developers.



You must be aware of the negative consequences of your actions and understand that you can simply break your phone. Therefore, if you do not know how to unlock your phone, you do not need to perform any actions with it, it is best to seek professional help.


Unlock java games
As for the games that are pre-installed on your phone, in order to fully play these games, you need to buy a special code to unlock these games.
In order to buy the game, you will need an Internet connection and the ability to pay by credit card, and then follow the instructions after choosing to buy the game.


How to remove the graphic lock, password from the smartphone?
If you forgot your pattern and locked your smartphone, then you shouldn't be upset. You have several ways to unlock your smartphone.
The first way. Enter the pattern until the system prompts you to enter the login and password for the Google account with which the smartphone was activated. If you forgot your login, connect your smartphone to your computer and run the proprietary utility on it. For example, for Samsung it is Kies, for HTC it is HTC Sync. By clicking on the 'About device' menu item, you will find your username and can recover your password using standard password recovery tools from your Google account.
The second way. If you do not know the login and password for the Google account, you will have to make a hard reset. But keep in mind that after that all phone settings will be reset to factory settings, and all information stored on the phone will be deleted.
For android phones, the hard reset procedure is almost the same, there are only small differences, a detailed description for each specific model you can find on our website. Here we will tell the general list of actions.
-Turn off your phone.
-Press the Power and Volume Up buttons together for a few seconds.
-«Recovery mode» will appear on the phone screen.
-Use the volume buttons to navigate through menus and the Power button to make selections.
-Select «Wipe data / factory reset» from the menu.
-Then select «Reboot system now» from the menu.
-Your smartphone will reboot and you will have it as you purchased it.
The third way. Unlock your smartphone using the service offered by the smartphone manufacturer. For example, Samsung has developed «Find My Mobile» to track and manage access to a mobile phone.
The fourth way. Remove your password using your Google account if you can connect to it on your computer. Your Google account on your computer has a remote reset and data deletion function on your phone, which will erase all data, including the lock password. Find My Device and Location must be active on your phone. Attention! The smartphone must be configured with a Google account and 'Play Market'.


Summary: Also Known As: Galaxy S IV Duos I9502 16GB; Operating System: Android v4.2.2 (Jelly Bean); Custom UI: TouchWiz UI; SIM Slot(s): Dual SIM; SIM Size: SIM1: Micro; Network: 3G: Available, 2G: Available; Dimensions: 136.6 (H) x 69.8 (W) x 7.9 (T) mm; Weight: 132 grams; Colours: Black White; Screen Size: 5 inches; Screen Resolution: Full HD (1080 x 1920 pixels); Pixel Density: 441 ppi; Display Type: Super AMOLED; Touch Screen: Capacitive Touchscreen, Multi-touch; Chipset: Samsung Exynos 5 Octa 5410; Processor: Quad core, 1.6 GHz, Cortex-A15 and Cortex A7 + Quad core, 1.2 GHz; Graphics: PowerVR SGX 544MP3; RAM: 2 GB; Internal Memory: 16 GB; Expandable Memor ...


Tarik Tonkov
Mobile technology specialist
Tarik Tonkov is a computer scientist and programmer turned tech journalist with a keen interest in the world of smartphones and tablets. He previously wrote for Android Life and was also a ghostwriter for several technology and automotive publications. He appreciates the reliability and beauty of smartphones, the symbiosis of characteristics and usability. In his free time, Tarik likes to travel by car and polish his programming skills to create small useful programs.



Comments, Questions and Answers about Samsung Galaxy S4 Duos


Android guruAugust 21, 2017
If you do not know the login and password from the account that was activated by the smartphone Samsung Galaxy S + , you will have to reset the settings to factory settings, but all information from the phone will be lost !!! Remove the SIM card and memory card from your smartphone. Turn off the smartphone -> Hold down the buttons: "Turn on " and "Volume up " and "Home ". After turning on the smartphone, press the "Enable" button and keep the "Volume up " and "Home" buttons until the green Android robot appears with the engineering settings menu. To move to the menu, use the volume buttons, and select the "Home" button. Find and run the "Wipe data / factory reset" items - click "Yes " in it. Next, select and press the "Home" button on the "Wipe cache partition" item, and then click the "Home" button - "Reboot system now ". The smartphone will reboot. Made settings! Now you can turn on the smartphone, it is unlocked!



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