How to hard reset or force restore DNS S4003 2SIM

If your DNS S4003 2SIM does not turn on, it does not react, it shows an error message when it turns on or you want to sell it, give it away or take it in for repair and you want to make sure that all the content stored in its 4 GB internal memory is erased, you will have to force its restoration.

Forcing the restore or doing a “hard reset” is a drastic method that can be used when the S4003 2SIM settings cannot be accessed either because the password has been forgotten or the operating system is corrupted.

If you can access the settings of your S4003 2SIM and want to perform a restore, it is preferable to do so using the “Reset” method, otherwise continue reading to see step by step how to force the reset, format or do a “hard reset”.

This procedure erases all the content stored on the S4003 2SIM so if possible, you should make a backup copy of your data before proceeding and unlink the Google account.

Estimated time: 5 minutes.

1- First step:

First of all, turn off your DNS S4003 2SIM completely. If you can't unlock the screen, press and hold the power button for about 20 seconds and the phone will turn off.

Power Off DNS S4003 2SIM

2- Second step:

Simultaneously press the power key and the volume key down on the DNS S4003 2SIM for a few seconds. On some devices, depending on the Android version, the combination may be the power key and the volume key up.

Hard reset buttons

3- Third step:

When the DNS logo is displayed, release the buttons. In the following menu, the touch screen does not work, so you must move through the menu with the volume up and volume down keys until you reach the option "Wipe data/factory reset" and press the power button to access it.

This menu is usually displayed in English, if the device menu appears in Chinese characters, see how to reset a mobile in Chinese.

Hard reset buttons

4- Fourth step:

A warning message will appear to avoid hard reset the DNS S4003 2SIM by mistake. Use the Volume Up and Volume Down keys to select the "Yes" option and press the Power button to activate the option.

Menú Android Recovery

5- Fifth step:

After a few seconds, the formatting and deletion of all data from the DNS S4003 2SIM will have been carried out, returning to its factory state, now it is necessary to restart the S4003 2SIM so using the volume up and volume down buttons we move to the option "Reboot system now" and press the power button to proceed to the restart.

Menú Android Recovery

Keep in mind that depending on the country, model and firmware updates of the DNS S4003 2SIM, the procedure may be slightly different.

If you have had problems performing a forced restore of the S4003 2SIM , consult the following articles with frequent problems that appear below, if you cannot find a solution to your problem, consult the section “Frequently Asked Questions about DNS S4003 2SIM” and leave your comment so that we can consult it and offer better service.

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