In order to use all these Android Secret Codes you just need to simply open the Dialer of your smartphone and type the secret code of which ever function you need to perform out of all these and you are good to go.

Here Is the list of  20 Android Secret Codes for your Smartphone :-

Phone Information, Usage and Battery – *#*#4636#*#*

IMEI Number – *#06#

Enter Service Menu On Newer Phones – *#0*#

Detailed Camera Information – *#*#34971539#*#*

Backup All Media Files – *#*#273282*255*663282*#*#*

Wireless LAN Test – *#*#232339#*#*

Enable Test Mode for Service – *#*#197328640#*#*

Back-light Test – *#*#0842#*#*

Test the Touchscreen – *#*#2664#*#*

Vibration Test – *#*#0842#*#*

FTA Software Version – *#*#1111#*#*

Complete Software and Hardware Info – *#12580*369#

Diagnostic Configuration – *#9090#

USB Logging Control – *#872564#

System Dump Mode – *#9900#

HSDPA/HSUPA Control Menu – *#301279#

View Phone Lock Status – *#7465625#

Reset the Data Partition to Factory State – *#*#7780#*#*

Format Your Device To Factory State(will delete everything on your phone) – *2767*3855#

Hidden Service Menu For Motorola Droid – ##7764726

So these were 20 Android Secret Codes for your Smartphone use them and enjoy playing around with your smartphone, do tell us which one you liked the most below in the comment section and keep stalking for more tweaks for your smartphone.

 

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Android Handset runs a Linux operating system as background and upon which android application runs. Each application runs in separate process in Dalvik virtual machine for each application an instance of Dalvik virtual machine is created.
Dalvik Virtual Machine is like the Java Virtual Machine. The Design of Dalvik Virtual Machine is optimized to be able to execute on Mobile Device. Dalvik Acquire Less Memory so that multiple instance of dalvik can be created and run simultaneously in the mobile device.

When Any application is installed in the mobile device the Linux operating system create a new user profile for that perticular application and an instance of Dalvik Virtual Machine. Each Application runs on its own Dalvik Virtual machine  as separate process and its own files it doesnt share anything. so there is less chance of "Bricking" ( Bricking is called the mobile crash).

How Android Manage Security for users personal information ? 

To access the shared resources on the mobile device. Android Application requires to get  explicit permission to access those resources. such as camera , to make call , Bluetooth , access personal information , current location etc.

if any application A want to share its data with  application B. B access As data by using URI. for e.g. Application A manage Contact information birth data  etc and if A want to share these information to other then it create the URI for accessing these data. rather than giving control of full application.

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