Wireless
A hard reset abruptly restarts your iPhone 12, turning it off and back on.
Why this works:
Hard resets can temporarily fix display issues, but they don’t get to the root of the software problem that made your iPhon 12 malfunction to begin with. If your iPhone 12 continues to have problems, we recommend trying a deeper software troubleshooting step like Reset All Settings or a DFU restore.
Pro tip: