Test & Check For Iphone -

You can initiate a hardware test by turning off your phone, holding both volume buttons, and plugging it into a charger, according to this YouTube video .

Offers details about the device's system specifications. Other Ways to Test/Check Your iPhone Test & Check for iPhone

Provides information on CPU usage, battery health, and storage. You can initiate a hardware test by turning

Dial *3001#12345#* followed by the call button to reveal advanced network settings and cellular data information, as explained in this Wilson Amplifiers blog post . holding both volume buttons