No Service when 3G is enabled.
I am having a problem for a bit with my old 3GS: I get very poor connection when 3G is enabled. Basically, I have some network for a few minutes (10-15, it varies) then switches to "searching" and then "No Network". I usually don't get any network back.
It is interesting to note that when 3G is off, I have absolutely no problem getting a stable GPRS/EDGE connection.
I am currently running iOS v6.1, but I have this problem for ages.
Therefore my question is: Is there a different antenna for 3G and EDGE/GRPS? Would you recommend changing it?
Is this a good question?