I am in Germany at the moment on a goodybag that gives me 5GB of mobile internet. Yesterday, my internet connection suddenly went really slow (down to GPRS from 3G). I have previously used my phone in Germany and in other EU countries at that hasn't happened before. I have been in the exact same city, I even headed into the city centre just to see if the connection might be better there -- nope. After a couple of restarts (unsuccessful) I turned my phone off last night and only turned it on again this morning. Still only GPRS.
My friend who I am staying with is on the same network (O2), but as a local German user and has no problems whatsoever so it doesn't seem to be an issue with the network itself.
I have also checked the APN settings -- all as indicated on the website.
Data roaming is turned on.
Would you be able to help? Obviously being on GPRS is extremely annoying as it is painstakingly slow...
I tried clearing the cache first but that didn't help; nigelbrooks is spot on, I think. It's O2 that is throttling my internet speed.
Having tried to select another carrier as you said, though, I find that I have no connection at all -- that might be because giffgaff have an agreement that allows me to only use their network while in Germany.
Well. At least now I know; it's something to keep in mind in the future