Also according to Wikipedia as of this post,
"On February 23, 2012, during the Q4 Earnings Call, the future of the T-Mobile 4G upgrade path was laid out. T-Mobile's LTE network will be rolled out on the AWS spectrum, and their HSPA+ network will transition to the PCS band, in order to achieve compatibility with other networks and phones in the USA, T-Mobile plans to begin this transition in early 2013"
Is this a complete and full 100% PCS use for HSPA+ or partial sharing with 2G despite being the backbone for voice calls? Can I use such phone as the RAZR V3xx having 1900MHz HSPA? It seems that today's "AWS" phones especially the tri-band (my avatar) which total around 138 (as of this post) will be considered pointless since the transition is slowly wiping HSPA 1700 of the map including last few months worth of Nokia penta-bands having the extra 1700 radio. Thanks.