Reset phone from Settings
To erase all data and reset your phone:
1. Go to Settings > System.
2. Touch Advanced > Reset > Factory data reset.
Get more help
Issue Where to get help
Billing or cellular network issues Contact your carrier.
Learn to use an app
Open the app and touch or > Help.
Phone issue Visit mobilesupport.lenovo.com for solutions, user forums, live contact
options.
Fix a problem : Maintenance procedures 215