Factory reset steps for a specific phone
Reset Cellphone is a reference for the menu path that restores a phone to factory settings. Choose the make and the model, then follow the steps stored for that handset.
A factory reset deletes accounts, apps, photos, and settings stored on the device, and it puts the software back to the defaults from the factory. It does not fix a cracked screen, unlock a carrier, or remove an account lock from Apple or Google.
The make list includes Nokia, Samsung, Motorola, LG, BlackBerry, Sony Ericsson, HTC, and other brands. Pick the make, then the model, and the steps open on their own page.
What to do first
Charge the phone, and copy off anything you still want. Photos and contacts that live only on the phone are deleted. If you set a security code and do not remember it, a default code printed in a guide will not work.
Read the heading above the button sequence. Some pages list a soft reset, which only restarts the phone and does not delete data, and a separate factory reset, which does.
How the steps are written
Each model page lists the menu names in order, such as Menu, then Settings, then Restore factory settings. The wording is the wording stored for that model. If a name on the phone does not match, you may have a different variant, or the software changed after the steps were written.
Send the model name and the menu you actually see from the contact page. That is how a wrong page gets corrected.
After the reset
The phone should start as if it were new. If it asks for the previous Apple ID or Google account, that prompt is an account lock. The steps on this site do not remove it. The previous owner has to remove the account, or you have to use the recovery process offered by Apple or Google.
Read the full factory-reset guide before you wipe a phone you still depend on. It explains backups, default codes, Activation Lock, and Factory Reset Protection in one place.