I updated to 3.16.651.3 this week and it has broken the ability for my LTE radio to grab the tower signal on the move. I have a 30 minute commute up the I-35 highway in Round Rock, Texas of which prior to the update my phone would stay on 4G the entire drive. Since the update, the only time my phone transitions to 4G is when I'm stopped at a red light. As soon as I start moving again, the 3G radio comes back on. Sprint, please fix this soon!! 3G is worthless in this area. I get speeds no higher than 0.3 Mb/sec on 3G.
Ok, this is a new one for me. I don't have 24/7 LTE in my area, only when I visit with my GF's family so I can't test readily.
Hopefully a Sprint admin will pop in here and enlighten us. Or someone with more readily available LTE can verify if the issue exists for them as well.