Format SONY Xperia E C1505 Hard Reset Method

How to hard reset Sony Xperia C1505 smart phone to restore its factory default settings. Ther are two methods to reset device.
1. If your mobile give slow performance and there are bad apps installed and you want to get ride them, Use soft reset method >>

Go to Settings -> Backup & reset -> Factory Data Reset -> Reset Phone.
Select option option "Erase everything" and confirm that.

2. Flashtool in the applications from Sony can be download from Sony website.
Flashtool software need to  installed in you computer and ready with USB data cable
Make sure SONY XPERIA E (C1504/C1505) and XPERIA E DUAL (C1604/C1605) battery is charge properly or full charge
Power off SONY XPERIA E (C1504/C1505) and XPERIA E DUAL (C1604/C1605)
Boot SONY XPERIA E (C1504/C1505) and XPERIA E DUAL (C1604/C1605) to flashmode with using: Volume Down Button and connect to USB cable at No.1 above
Follow the menu at you computer display, it is easy to understand the steps.