Open the Settings app
Tap About phone or About device
Find Model name or Model number
Check the label on the phone box or back cover
Dial *#06# to view the IMEI, then check the model in device settings or on the manufacturer’s website
Check the original purchase receipt or invoice
Look at the SIM tray, battery compartment, or sticker under the back cover if available
Use the manufacturer’s support app or website with the IMEI or serial number