發現所有的移動公司的秘密代碼。
Every mobile phones have secret codes to access secret or operative functions of the mobile. You may not know these codes. Some of these codes make it easy to check functionality of a phone. It includes secret codes of iPhone and android phones. It includes all the android phone company like Samsung, Nokia, Sony, HTC, Mi Note.
You can directly dial these codes or copy the codes from the list and paste it on dialer to dial the number.
Using these codes may sometime harm your phone, so apply codes only after you have read the code function properly.