According to our sources, FlexPay customers are currently unable to upgrade their handset via My.T-Mobile.com. Symptoms include, an hourglass that is stuck on the webpage. T-Mobile Support Teams are working to resolve the issue, and at this time there is currently no estimated time as to when the issue will be resolved. Of course you could always give Customer Care a call, and upgrade through them, or you could head down to your local T-Mobile Retail Store and physically play around with the device before purchasing. Stay tuned, as we’ll keep you guys posted! Anyone still experiencing issues? Let us know in the comments!