If you think your Android has a system update and the Telcos has not pushed it to you yet, you can do it yourself now. Just by keying in a few numeric on your phone, you can know if there is an update for it or not.
To do this, just press
But first, I have to admit that I have not done it before (I do not have an Android phone). So, please let me know if you have done it successfully. 🙂 I wonder if it will work for Android tablet or not.