Internet connection gone on vogue
 

I just changed a Sprint Vogue to Reliance in India and manually wrote all the MIN/MDN/SID etc. Everything seems to be fine only problem is Internet Explorer does not connect to a site and neither does Yahoo Go,Windows Live Messenger or Google Maps. Funny thing is the weather app on the HTC Home can get data and I can access my gmail POP account through the phone and send and receive mails. I cannot understand why some programs can access data and why some cannot. Can somebody help please ? Thanks