hey guyz need some help! i got a 4S and now i m back in my home country where there is no 3G service! and now the thing is this sometimes i when i send the text messages they are being sent!! they fail! and when they fail the signals are gone and the 4S is searching for the network!!! i have noticed if i send one or two messages quickly then the same thing happens! what can be done? is any one else getting this problem?