trajan Posted June 2, 2014 Share Posted June 2, 2014 True exchanged my 3G sim post-paid card for a 4G sim for free (in my iPhone 5 bought in HK) but it never connects to a 3G signal (even in super central places like SIAM PARAGON).... the True shop at SIAM PARAGON is stumped.....anyone have the same problem?? I dont want to buy an iPhone 5S (since iPhone 6 is coming out in a few months).... Link to comment Share on other sites More sharing options...
Sandman77 Posted June 9, 2014 Share Posted June 9, 2014 3G signal only works on 3G network And 4g only on 4 g when signal is AvAlible if not and you are in a 3G signal area only Outside bit city , normally should switch over to 3G also with 4 g sim Link to comment Share on other sites More sharing options...
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