Nokia Acknowledges Lumia 900 Data Issue, Offers Fix and $100 Credit
 

In the short time I spent with our Nokia Lumia 900 review unit, I never encountered any loss of data connectivity issues either on AT&T LTE, AT&T HSPA+. Nevertheless, shortly after the Lumia 900 went on sale this Sunday, some users began reporting issues with the device losing data connectivity on both HSPA+ and LTE. Since those early reports began trickling in, Nokia has now acknowledged a memory management issue is at fault and will issue a software update on April 16th.

http://www.anandtech.com/show/5739/n...ers-100-credit