Verizon may boast that it is the biggest cellular network in the US; AT&T too has got some reasons to boast now. Computerworld recently tested and announced that AT&T has got the fastest and most efficient network connectivity in the US.

Thanks to the iPhone again for forcing AT&T to implement network upgrades it has done so far. This is not the end, the network provider has plans to leave all its competitors behind with their latest proposal to upgrade its network to HSPA 7.2.

The latest upgrade plan also is related to the expected launch of the new iPhones. AT&T upgraded from its earlier EDGE network to 3G before the launch of the iPhone 3G. 

Apple and AT&T have prospered together and more promises seems to be ahead. 

Now, AT&T please reduce the monthly usage charges.