iOS5 or iP4S with AT&T microcell

[ronmcse]

Has anyone who has upgraded their IP4 to iOS5 or anyone with a new IP4S noticed any improvement using a AT&T microcell and iPhones? My iPhone 4 with iOS 4.3.3 Fails when trying to connect to the microcell and can take about 2 mins before connecting to it sometimes.