What does it mean to flash a phone

Flashing your phone may void your phone’s warranty and it may render your phone useless depending on the security measures in place on your phone.

it will not wipe the mobile data unless its different from what your current rom is. i.e if you try to install the rom without format/wipe-ing factory data and user data. it might display that installation failed due to incompatible data(it means the new android rom and apps that comes with it is not supporting them).

No, it will not. No firmware update will unlock your Android handset. … Rooting and unlocking are two different things, When you root a phone/device you are unlocking the potential of the Android Operating System. When you “unlock your phone” you are allowing the phone’s hardware to accept other carrier’s SIM cards.

This process is called ‘flashing a ROM’. During flashing, users load the new ROM in a manner similar to installing manual updates to the device. This installation is done through a recovery – a dedicated and bootable partition on your smartphone device that can install new updates too your device.

‘Bricking’ your phone essentially means that your once useful device is now only as useful as a brick. A ‘bricked phone’ is usually unresponsive, won’t power on, and doesn’t function normally.

Go to Settings > General > Reset > Erase All Content and Settings. You’ll be asked to confirm, and it may take a few minutes to complete the process. Start by backing up your Android phone, then remove any MicroSD cards and your SIM card. Android has an anti-theft measure called Factory Reset Protection (FRP).