if your having a delay in getting your content, you need to call your provider and ask them to send your phone the multimedia settings for your sim and phone
im on orange and had similair problems. All i had to do was turn off the 3G option on my phone if you have that and it works perfectly. if i put 3G back on tho it starts playing up again, no signal not calling etc. If you have that option on your phone try it. x
Yup I've tried this, doesn't help, just makes my internet stupidly slow!
I went to the 3G shop a while ago and they were saying that o2 hasn't got many signal things (sorry for the technical language) around here so the signal's not so good. But I know other people with o2 phones around here and they don't have the same problem