I use Orange 4G, and whenever I start the phone, or after a reboot, even if it’s set to use “4G first”, it shows 3G/H. I have to switch to “3G first”, and then back to “4G first” to get 4G signal. After some time (it might also be related to cellular tower change), from 4G it goes back to 3G and I have to redo the above process. This behavior happens on both 4.5.5I and 220.127.116.11I, so both latest stable KK/LP builds.
Is there anything I can do?