مصدر الموضوع الاصلي: zte p729 hard reset

ZTE Blade hard reset

In Idle mode, open the application list and select
Settings → Privacy → Factory data reset → Reset phone
→ Erase everything.

ZTE Blade FTM Mode

ZTE Blade (ZTE San Francisco) hard reset: FTM mode (aka Field Test Mode)
With the phone turned off, press VOLUME DOWN + POWER key