best amazing android trick ever user should know it

mobile becomes imp[ortant part of our life. we spent lots of time on the mobile phone but till now we don't know about it very well here are some android tips.


1) block outgoing call
when your friend or else anyone took your phone. you may get a fear whether they call someone from my contact list. you can block it for any time set a time for block after that you can disable it

>>go mobile dial
>>*#31#
>>call it
now third party user cannot call anyone from you device
for deactivate
>> mobile dial
>>type #31#
>>call
>>now it is deactivated

2) SAR value
check mobile radiation if it is <6W/Kg then it is normal otherwise it is harmful
>>dial *#07#
>>you can see sar level of you device

3) when you download lots of  app on your smartphone you get lots of notification .in v=every smartphone you get the option to manage to notification for this follow following steps
>>go setting
>>notification
>>now you see all app
>>disable notification permission

4) test mode
check all your mobile hardware with the help of this trick
follow the steps
>>dial *#0*#
now you see lots of options select you want to check

5) developer option
>>setting
>>about the phone
>>softwere info
>>tab seven times
>> now you can see all information
>>now you see developer info

I hope it help you guys