: A simplified version of the general test mode for quickly checking the speaker, vibration, and basic sensors. Device Identification & Information (IMEI/Serial Number)
(including 2016, 2017, or 2018 models), open the app and enter the code directly into the dialer keypad . Most codes will execute automatically as soon as the last character is typed, while some may require you to press the Call button. Essential Samsung Galaxy A7 Secret Codes how+to+use+secret+codes+on+samsung+galaxy+a7+2+work