Sound while charging in sleep mode

[poosterl]

Hi all, I recently bought an Asus TF300T.Apparently, when you do not switch it off all together when charging but leave it in sleep mode, it does "ding" every few seconds. Every few "dings" it also wakes up, the screen lights up and goes back to sleep when I don't enter the security pattern only to start "dinging" again and so forth and so on. (the ding is the one used for screen lock/unlock).
The manual doesn't mention anything about this behaviour that I find quite annoying.
Is this normal?
tx in advance,
Peter.

 

[leeshor]

Hi Peter. Can you connect the sound to getting mail? There aren't a lot of reasons that would happen but there are a few. Try installing Auto Airplane Mode (by DON) from the Store and see if that helps. Some active widget is doing it somewhere.

 

[poosterl]

OK tx, will try that. bear in mind however that it only does that while charging.