my internet has stopped working?? ive a samsung note

[pamc20]

hi. I took out the sim out off my phone and when I put it back in now have no internet? been like this for days. ive bought my monthly top up today and still no internet.
ive a samsung note. its the very first note not a note 1 Just a note. anyone know how I get my internet to work again??? thanks z

[dalyer]

First thing to check is that your APN/internet settings are still correct.

If necessary reconfigure them using the online configurator or the Tweakker APN app.

http://48months.tweakker.com/choose

https://play.google.com/store/apps/details?id=com.tweakker

What does your online account say about your membership status, expiry date and data allowance balance?

Hope this helps.