Inaccessible email IMAP port
I have a Z10 on OS 10.2.1.2156 running on T-Mobile. It has been working great with my email account until this summer, where all of a sudden it could no longer reach my email host. The web browser works fine, but it cannot seem to make a connection to my mail host's IMAP port (both regular and SSL ports). I even tried setting up a Gmail account, and the Z10 cannot reach that either. What's odd is that this is limited to the mobile network. If I have a WiFi connection, I can get my email just fine. T-Mobile support could not find a problem and told me to reload my OS. Apart from that drastic step, do any of you have any suggestions on troubleshooting this issue? Thanks.