Secret codes will allow you to get hidden information about the technical parameters of your smartphone, enter the engineering mode and configure additional functions, expand the capabilities of the smartphone. With their help, you can find out the firmware version, and what is very important IMEI of your smartphone - which is needed if:
- you plan to check the mobile device at the purchase stage. By checking IMEI, you can make sure that the box contains the original device, not a fake;
- you want to "identify" a lost or stolen mobile device;
- you need to block the smartphone if it was stolen.
If you buy a used smartphone, the warranty for which has already expired, with the help of secret codes you can find out phone usage statistics, find out the remaining battery capacity, usage statistics (the time all applications have been running since the device was turned on and the time they were last launched), reconfigure email and calendar, run a test display, keyboard and vibration, microphone, speakers, headset, tests of the main and selfie cameras, camera flash, geolocation, bluetooth, battery charge, OTG and FM radio, SD Memory Card, as well as all the sensors that are in the smartphone.
What is hard reset for?
Hard Reset - Reboot the device, during which the factory settings of the system are restored and all user information is deleted, including installed programs, contacts and SMS.
Hard Reset in the smartphone will save him from some problems, but, alas, will not save in the event of a serious breakdown. Use this simple way to get rid of files downloaded to the phone's internal memory, recall a forgotten graphic key, speed up the device a little, or make it turn on again.
Hard Reset will also help prepare your smartphone for sale or exchange in an electronics store according to the trade-in scheme.