Take a quick look at some of the Importance of the full code for Android(ঝটপট দেখে নিন এনড্রয়েড এর কিছু গুরত্ব পূর্ন কোড)

ঝটপট দেখে নিন এনড্রয়েড এর কিছু গুরত্বপূর্ন কোড
(1) Shows Wi-Fi MAC address:

(2) Bluetooth test:

(3) Shows Bluetooth address:

(4) LCD test:

(5) Vibration & Back Light test:

(6) Touch screen version:

(7) Touch screen test:

(8) Proximity sensor test:

(9) RAM version:

(10) Android Phone GTalk lanuch:

(11) PDA, Phone, CSC, Build Time,Change list number:

(12) Android Phone Reset:

(13) Android Phone Backup:

(14)Android Phone Information:

Just Dial *#*#4636#*#*
You can use this code to get some information about your phone and battery.
It shows phone information, Battery information, Battery history, & Usage statistics.

(15) Android Phone Service mode:

(16) Android Phone Camera Information:

Just Dial *#*#34971539#*#*
You can use this code to get information about the camera.
It shows following 4 menus.
Update camera firmware in image, Update camera firmware in SD card, Get camera firmware version and Get firmware update count.
WARNING: Never use the first option (Update camera firmware in image) otherwise your camera will stop working and you’ll need to take your phone to service center to reinstall camera firmware

(17) Android Phone Factory Format:

This code is used for factory format, which will delete all files and settings, including the internal memory storage. It’ll also re install the firmware.

You can use this code to reset your Android phone back to factory data.
It’ll remove following things: Google account settings stored in your phone, System and application data and settings, Downloaded applications.