Service mode is a secret function in modern phones that allows easy diagnosis of a variety of problems.You have to type a special code into the phone app of your phone to enter this special mode.You will be able to access a number of diagnosis tools.A few seconds is all it takes to access service mode.
Step 1: Go to a browser.
If you're on a computer, you can launch your favorite web browser on it.
Step 2: Search for the service menu code on your device.
You can find special codes for accessing service mode on your device.Place your mobile network carrier between the brackets if you use the phrase "Mobile Carrier"
Step 3: Take a look at the code.
Write the code on a piece of paper.It helps you remember the codes when you forget them.
Step 4: Go back to the main screen.
To return to the home screen on your phone, hit the Home button.
Step 5: Go to the phone app.
The stock Phone app can be found on the home screen or app drawer.The codes can't be used on third-party dialers.
Step 6: The service code needs to be entered.
If you want to type in the code for your phone model and carrier, you have to tap the dialing field near the top of the screen.
Step 7: You can access Service mode by pressing the dial button.
The dial icon may cause the phone app to crash.You should be able to see the status of your device.The buttons are labeled according to what function they will test on the device.You can use the button on the left side of the screen to choose a tool to help diagnose problems with the phone.