on my TP 4G I have the regular "feature", that while it claims to have a data connection, it actually does not.
There is a 3G symbol and some bars, but nothing is transmitted. The apps don't complain about "no internet connection" but just don't get data.
As a simple Airplane mode -> no Airplane mode fixes it, I do believe it is something stuck on the TP rather than a bad net. However, as there is no indication, I don't even know if the cycle is required.
I do not recall having seen that in wi-fi mode.
Anyone with similar issues and maybe a solution?