As you understood, this guide focuses on how to hard reset on Sony Xperia Z.
Hard reset is a complete reset of the system of your smartphone or tablet to its original settings. Also it means that all personal data from the internal memory will be removed.
Hard reset is called factory reset and wipe data, but, in fact, these terms define the same action – reset your device to its stock condition.
There is even a joke, that “all ills saves Hard Reset”.
When you need to hard reset on Sony Xperia Z?
- to reset the configurations and settings of smartphone to the state “out of the box”;
- memory is full, it is buggy and slow, and you do not want to look at what the problem is;
- you plan to sell your favorite device and want to remove all personal data and restore the system to its stock condition;
- Forgot password and you cannot unlock your smartphone.
It is understood that hard reset on Sony Xperia Z completely erase all your data, so you need to backup, save photos, videos, music, contacts and everything else.
And now we will tell you about few ways how to hard reset on Sony Xperia Z.
The first way – hard reset on Sony Xperia Z through the menu settings
The easiest and most effective method. Go to “Settings – Backup and Reset – Reset”.
Here you can choose to delete the data in memory or not. If your smartphone is buggy, memory is full, the system does not work as it should, then we recommend to put a tick and press the button “Reset phone”.
The second way – hard reset on Sony Xperia Z through service menu
More one simple way, if your smartphone does not freezes, and you can manage it. Open the dialer and dial field, type *#*#7378423#*#*, which will allow access to the service menu. 
Then you need to select “Customization Settings – Reset customization – Reset customization and reboot”.
The third way – hard reset on Sony Xperia Z using PC Companion
Sony Xperia Z owner should have universal app for renovation, restoration, backups, etc. If you want to hard reset smartphone, you need to open “PC Companion -Support Zone – Software update – phone / tablet recovery”.
+ Bonus
If the smartphone freezes, you can hard reset on Sony Xperia Z using a special button under the plug.
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