yes, if a mobile receives a signal (rxlev) of less than -100dBm, it is way too low. Most of the time it will lead to a dropped call.
i’m glad it works better now.
i think it is now time for you to learn about parameters and radio optimization 🙂 i can’t explain you everything via internet.. you’d rather ask your vendor some documents about radio optimization, radio parameters and handover procedures.
good luck !