Who is your network provider?
Also see my post a few pages down titled 'web browsing'
It's about me having same problems on Orange network but when I went abroad and phone defaulted to T-MobileNL all the faults disappeared.
No settings changed by me when I arrived in Holland, for 5 days had 100% fast connection to every one of my bookmarks, all texts went first time, no loss of signal, signal strength bursting out the phone wherever I went.
Arrived back in the UK defaulted back to Orange, no settings changed and phone starting playing up instantly all locations, poor signal, 'page not found' etc etc.
Phone was a dream in Holland, continues to be a nightmare in UK.
This phone has absolutely no reception issues, it has network provider issues, my travels proved what I always suspected.