Open the Settings app
Tap About phone or About device
Look for Model number or Device name
Check the back of the phone or SIM tray
Check the original box or receipt
Dial `*#06#` to view the IMEI, then use it to identify the model
Check the manufacturer’s support app or website
On Android, go to Settings > System > About phone
On iPhone, go to Settings > General > About
Connect the phone to a computer and check device information in the device manager or sync software