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How to format Samsung S4

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How to format Samsung S4: Your Samsung Galaxy S4 has become super slow and, failing to find a solution to the problem, have you decided to go all out by formatting your phone? Do you have to sell your S4 and would you like a hand to erase all the data on the device’s memory? Don’t worry, I’m here to help you.

With today’s guide, we’ll find out together how to format samsung s4 returning Android to its factory state and deleting all the files on the device. In this way you will be able to repair software errors that have led to the instability or slowness of Android and you will delete all data from the memory of the mobile phone: fundamental operation in case of sale or transfer of the same.

The procedure is extremely simple to carry out, but drastic, very drastic. Before putting it into practice, therefore, make sure you have a backup copy of all your data and check that the online backups of Google Drive and Gmail are working. Would you need a hand also in this situation? No problem, give me a few minutes of your time and I will also explain how to protect all your most important data. Find everything explained below. Happy reading and good luck in restoring your mobile!

Preliminary operations

There are at least a couple of things I recommend you do before getting serious about your S4: a system anti-malware scan and a backup of all data stored on the device’s memory.

Antimalware scan

If you have decided to format Samsung S4 because the device is too slow or your applications continually crash, there is a concrete possibility that the cause of these problems is a malware that has arrived on your mobile phone through some app downloaded from external sources with respect to the Google Play Store.

In light of what has just been said, I suggest you follow my guide on how to eliminate Android viruses and check the memory of your smartphone. If there is really malware at the root of your S4 problems, you will be able to fix the situation without having to resort to formatting the device.


Another operation to be performed before formatting a smartphone – almost mandatory – is to create a backup copy of all the data on the device memory.

To complete this work you can turn to various solutions: there are applications that allow you to save apps, settings and data directly on your smartphone, or on a microSD card (the backups will then be transferred to the PC so as not to lose them when formatting the phone) ; there are the official Samsung software that allows you to save data on the PC and finally there are the Google online services that allow you to save photos, videos, contacts and other important data online (in order to automatically synchronize them via the Gmail account ).

As for backup apps, I highly recommend you give it a try Titanium Backup which allows you to create complete backups of apps, data and settings and then restore them using the same application. The only downside of Titanium Backup is that to take full advantage of its potential you need to root Android. If you haven’t rooted Android yet and you don’t intend to, you can give it a try Easy Backup & Restore which does not require this procedure but allows you to save only SMS / MMS, calendar appointments, bookmarks, call logs and contacts. I told you about both applications in detail in my tutorial on how to backup on Android.

Do you prefer to use official Samsung tools? In that case read my tutorial on how to connect Samsung mobile to PC and use the software Samsung Kies to synchronize your S4 data with your computer. However, be aware that this is a less powerful and flexible solution than applications such as Titanium Backup.

Finally, go to the settings of Android (the gear icon located on the screen with the list of all the apps installed on the device) and make sure that the functions for online data synchronization are all active. How you do it? Very simple. Select the item Account and “tap” first on the logo of Google and then on yours Gmail address. Then check that the “levers” relating to contacts, calendar, etc. are all set to ON. If not, activate them yourself.

For photos, they are backed up by Google Photos app which allows you to store all photos up to 16MP and videos with a maximum resolution of 1080p on Google Drive on Google Drive, for free and without space limits. If you want to make sure that the Google Photos backup function is active, start the application, press the ad icon Hamburger located at the top left and select the item Settings from the bar that appears laterally.

Then move to Backup and synchronization, make sure that the “lever” located at the top right is set to ON and configure the setting Upload size on High quality. All data synced online will be automatically downloaded to your S4 when, after formatting, you set up the Google account on your phone again.

Also Whatsapp supports backup of conversations to Google Drive. If you use this famous messaging app, go to its settings and make sure that the backup function is active (otherwise you will lose all your chats). You can find all the information on this procedure in my tutorial on how to save WhatsApp messages.

Formatting the Samsung Galaxy S4

How to format Samsung S4

Now you can finally take action and format your Samsung Galaxy S4. Know that during the procedure the contents of the smartphone memory will be deleted but not that of the microSD card. To format the microSD also you have to go to the menu Settings> Storage> Format SD Card of Android and press the button Format SD card. If you want to take maximum care, you can also extract the card from your smartphone and reinsert it at the end of the formatting procedure, it is not important for the success of the operation.

Are you about to sell your smartphone, or in any case to sell it to another person and you want to avoid 100% the risk that the latter can trace the data that was present on the device’s memory? Then wiping the free space as I explained to you in my tutorial on how to format Android. It is a procedure by which the smartphone memory is rewritten several times to avoid that, using special software for the recovery of deleted data, someone can trace the files that were present on the device.

Having also made this important consideration, I would say that we can proceed with the formatting of the phone. Below you will find all the steps to be taken.

Factory data reset

To reset Android using the standard procedure provided by the operating system of the green robot (technically called factory reset) you have to go to the settings phone (the gear icon found in the notification menu or in the list of apps installed on the device) and select the items Account> Backup and reset from the screen that opens.

Then move to Factory data reset, presses the buttons Reset device and Delete everything and wait for the phone to reset. Within a few seconds your S4 will restart and when you log back into Android you will find a brand new phone, on which to reset Google account, Wi-Fi connection and the rest of the data you have previously saved.

Hard Reset

Can’t go through the standard Android recovery procedure? In this case you have to access the Recovery menu (a software that runs outside the operating system and therefore works even when Android is having a tantrum) by carrying out the so-called hard reset of your smartphone. Also in this case Android will be restored to the factory state, the internal memory of the device will be deleted, while the data on the microSD will remain in place.

For format Samsung S4 via hard reset you have to turn off the phone and restart it by holding down the keys Volume +, Power And Home. If you can’t shut down your smartphone normally, take out the battery temporarily.

When the Recovery menu appears, use the key Volume – to move to the item wipe data / factory reset and press the button Power to select it. Then select the option yes – – delete all user data, presses the button again Power and wait for the Android reset procedure to be performed. This may take a few seconds.

At the end of the reset procedure, select the option reboot system now from the Recovery menu, press the key Power and wait for the S4 to restart. At the restart you will have to go through the initial Android configuration procedure in which to set up Wi-Fi connection, Google account and so on.

If you need to hard reset your Galaxy S4 and you are not clear about some steps in the guide, try to do a “jump” on Google and search for video tutorial on the subject: you’ll find plenty of them.