Nokia Lumia 900 windows phone has a known software issue that lead to disconnection for data communication. Nokia promised they would provide software update in April 16 and also offer $100 to each AT&T customer in USA and Rogers customer in Canada.
A little while after the Lumia 900 went on sale, we discovered a software issue that can sometimes lead to lost data connectivity. This issue is purely in the phone’s software, and isn’t related to the phone hardware or the network itself.
We apologize for any inconvenience this may have caused, and as a gesture of goodwill, we are offering a $100 AT&T bill credit to everyone who has already purchased a Nokia Lumia 900 or who will purchase one before April 21st.
However, Nokia is working fast, the software update package was ready in April 13 already.
If you have already purchased a Lumia 900, you have two options. You can either:
Use Zune to easily update your phone with the latest software today.
Exchange your phone for a new Nokia Lumia
900 at any AT&T store from now until April 21.
The detail information please read Nokia official site here.