Food for thought from TmoNews:
T-Mobile To Offer Additional Unlocked iPhone Support Beginning January 30th
Ever since AT&T Wireless announced “improved” cell sites in my area, my 3G download and upload speeds have FALLEN dramatically. Download speeds are a bit over 1995 ISDN-BRI speeds at the moment. And, there are large areas where no apparent data bandwidth is available (no email, browsing, etc.) despite AT&T 3G signals being “detected” by my iPhone 4. Others have noted the same problems in the same problem areas I’ve noticed. This problem has been going on and getting worse since November 2011.
I’m keeping an eye on this development.