We don't have B26 or B41 in my area, just B25. My N5 won't connect to B25 unless I set it under dial code 4636 (phone info) and change it to LTE only. Then I can only get data and no voice.
What's weird is that when I toggle airplane mode, it says LTE for a second, drops, then connects to eHRPD. Sprint says wait til tomorrow. I'm not holding my breath.
For those who have rock-solid LTE, what band are you on?