While browsing on internet I found that HTC Titan II going to work on 3G with T-Mobile. So it means that it would not work on 4G speeds. Also I come to know that T-Mobile going to introduce HSPA+ on 1900MHz and LTE on 1700Mhz. Also new HTC Titan II and Nokia Lumia 900 are going to have support for T Mobile LTE network. Let me correct if I had mentioned something wrong over here. Thanks a lot in advance.