This is what i figured out so far.. .and it seems (most likely) to be an issue with the 2G/3G provider. But dont know what hte 2G/3G network provider/carrier should change to make it work for my connection. Also not sure if all exchange server users under this network is having issues or if its isolated to only few users
Don't know if anyone else experiened similar pattern.... and if hte conclusion makes sense? One more observation is that even in iPhone 4 Safari - i'm not able to go to the https://<server name> site which was working before iOS 5.1 upgrade. Same server name i use to setup my exchange server mail box as well
My iPhone 4 - CarrierA -
Exchange server works fine in Wifi
Exchange server doesnt work in 3G/2G for both me and my friend's exchange ID
Friend's iPhone 4 - CarrierB -
Exchange server works fine in Wifi
Exchange server works fine in 3G/2G for both me and my friend's exchange ID
Swapped the SIM card between the phones and tried
My iPhone 4 - CarrierB -
Exchange server works fine in Wifi
Exchange server works fine in 3G/2G for both me and my friend's exchange ID
Friend's iPhone 4 - CarrierA -
Exchange server works fine in Wifi
Exchange server doesnt work in 3G/2G for both me and my friend's exchange ID
Sayodhya