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I want to know how to protect mobile data connection function in Android. I don't want somebody or me accidentally switching it on.

I need something like Smart AppLock but to protect basic phone functions that control mobile data internet communication.


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Depending on your mobile network operator one solution could be to change the APN of your mobile network connection to an invalid value. On most mobile networks you don't get a data connection without a valid APN - however on some you always get a connection independently of the APN name.

There are plenty of tools that simplify APN setting/removing/changing - some examples:

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Can i turn off APN temporarily? – Boris_yo Oct 19 '11 at 15:33
Also can i set password? – Boris_yo Nov 6 '11 at 5:03
@Boris_yo: Of course you can not set a password. Apps managing APNs simply automate what is available in the settings dialog - which is accessible by everyone. Therefore a password does not much sense. – Robert Nov 6 '11 at 11:56
Not good. I wanted something that would deny access to internet through mobile network in case somebody gets their hands on my device. – Boris_yo Nov 7 '11 at 17:01
Then you should use the flight mode and disable the mobile network completely. The SIM PIN is a good protection. – Robert Nov 7 '11 at 18:28

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