Won't connect via LTE Now my phone can't use internet with 4G. An exclamation mark appears near the signal bars. Although there's a speed indicator it won't down or up load anything. But I can surf on 3G (when 2G/3G is chosen as the preferred network type) without any problem. How to use 4G like before?
I don't know what happened but, when the "APN protocol" and "APN roaming protocol" are set to IPv4/IPv6 from IPv4, all the problems went away.