How do I change GSM to GPRS on Blackberry?

[boylikeme]

I've had my Blackberry for two years now and it's always been GPRS. Now today, it keeps going to GSM and I'm unable to use the internet, the Twitter app, send messages and use BBM. It's so annoying. I always use my phone in my bedroom, so it's strange that's stopped working.

[Zoro3012]

Mine did that for a bit. Try pulling the battery or failing that you just have to spin your wheels til it works again unfortunately