T-Mobile iMessage problems?
I just upgraded to the 5s and gave my BF my ATT unlocked iPhone4. I know it's worked fine unlocked because I've used it when I go to England on OrangeMobile network without issue.
He's on T-Mobile and everything seems to be working other than I am not able to send him iMessages, and it doesn't seem like he is able to receive iMessages from anyone else with a known iPhone either. The weird this is that he is able to SEND them and also facetime without issue. Just not receive them.
I've tried this on both cellular and Wifi networks. Done the factory reset a few times as well as toggle the iMessage feature on and off. I even tried to do it on my phone to see if my phone just wasn't recogisning his number as an iPhone because he was previously on Android.
I also had the SIM updated by T-Mobile last night when we did the swap and I am clueless as to what the issue might be. I don't think it's anything with his plan because hes able to send iMessages, and has unlimited data. I never had this issue when I was using the phone I gave him, and I am still able to iMessage everyone but him on my phone so I don't think the issue is my new 5s. Any help would be great.
Thanks!
iPhone 4, iOS 7.0.4