When switching from 3G to 4G or from 4G to 3G, there is a period around 5 sec when you can't make phone calls. Next to the network name appear "data connect..." , i presume it says '' Data connection only''. During this switch i can't make/receive any calls only data is working. This started happening in the last 2 global developer rom
Any way of avoidin this but still keep 4G network???