To fix a cellphone, first identify the exact problem, such as the device not turning on, the phone unexpectedly shutting off, the phone beeping or the phone being unable to receive calls. You may also experience dropped calls in the middle of conversations.
If the phone unexpectedly shuts off or fails to power on, first try charging it. If it still doesn't turn on, remove the battery from the phone, brush away any dirt on the battery, and then reinstall it. Next, check whether the battery and the charger are in good condition. If either is faulty, replace it.
If the cellphone is beeping, check whether the battery level is getting low. If it is, charge the device. If it still beeps, check whether there is a text or voice mail message you haven't opened. Lastly, check whether there are service alerts you haven't examined.
If the cellphone makes calls but doesn't receive calls, check whether the "No Svc" indicator is on; if it is, turn it off. Next, check your signal strength. If the signal is good, ensure that call forwarding is off. If you're experiencing dropped calls, first check whether you're in an area with poor reception. If the reception is good, move away from possible sources of interference.