It depends what phone it is
hard reset cricket domino
How to reset cricket a210 phone
How to factory reset ztex500m
To reset the Cricket EC1705 modem, locate the reset button, usually found on the back or bottom of the device. Use a pin or a paperclip to press and hold the reset button for about 10-15 seconds until the lights on the modem blink, indicating it is resetting. Release the button and allow the modem to reboot completely. Once the lights stabilize, the modem will be restored to factory settings.
Motorola l6 factory reset
Applications get erased when you do a factory reset.
germany
No, even if you factory reset the Galaxy S4 it will not downgrade.
If you do a factory reset then yes you will loose everything.
Resetting a rooted phone back to factory setting can be easy. All you have to do is go to the settings and click on the factory reset.
you cant
To reset your ZTE X500 Cricket phone, go to the "Settings" app, scroll down to "System," and select "Reset options." From there, choose "Factory data reset" and confirm your choice. This will erase all data on the device, so make sure to back up any important information before proceeding. Alternatively, you can perform a hard reset by turning off the phone, then pressing and holding the Volume Up and Power buttons until the ZTE logo appears.