I have a Galaxy S4 bought from AT&T. Now I have switched to T-Mobile. My 4G LTE is not working. In fact there is no data connection at all. I never ever had 4G LTE connection problems with AT&T. Here are details of my phone.
Galaxy S4
Android version - 4.3 (received from AT&T)
Network - T-Mobile
Mobile Network Type - LTE
Mobile Network State - Disconnected
All the mobile data related settings are correct since I was using it for a while with AT&T. So I am confident about the settings.
I tried calling the customer support, but there is no update from them and 4G LTE still does not work.
Do I need any software update from T-Mobile that will make my phone work with t-Mobile 4G LTE? Not that 4G LTE does not work at all. It works, but, only at times. Its totally random. At same place it will work today but not after 30 mins. And it does not work for 22 hrs in a day and works only for 2 hrs in a week which are un-noticable for me.
I am totally disconnected from internet after switching to T-Mobile.
Wireless works fine, but, I need to be at home for that, which I am not.
So please help me.