Service codes of the phone are special combinations of numbers, by entering which you can change the hidden settings of the mobile. These combinations are different for each phone manufacturer.
Instructions
Step 1
One of the commands, which is the same for all models of all manufacturers, is the IMEI code check. With its help, you can find out if your phone is original by comparing the received number with the one indicated on the box, as well as under the battery. This command is * # 06 #.
Step 2
If you are using a Motorola phone, you have the ability to edit music. To do this, enter the combination ppp000p1p and click OK. After that, restart your mobile using the "Turn off" button. Enter the combination ppp278p1p to bring up the audio editing menu.
Step 3
Samsung phone owners have such options as adjusting the display using the command * # 0523 #, changing the contrast of the display using the command * # 9998 * 523 #, viewing the battery status using the combination * # 9998 * 228 #, as well as testing the vibration alert … To do this, enter the combination * # 9998 * 842 #. You also have the opportunity to find out extended information about the phone and firmware using the command * # 9998 * VERNAME #.
Step 4
In Alcatel phones use the combination * # 000000 #. After entering it, you will be taken to the internal menu of the phone. The commands traces, ctrl charge and damier will become available to you. Using the traces command, you can enter the channel indicator menu, use ctrl charge to check and measure the voltage of both charging and batteries, and using damier to test the display.
Step 5
In Nokia phones, you must enter the combination * # 92702689 #. You will get access to improving the speech quality using * 3370 #, deteriorating the speech quality * 4720 #, as well as viewing the firmware version using the combination * # 0000 #. Decreasing the speech quality will save your battery, while improving the speech quality will reduce the total talk time by thirty to forty percent.
