[Q] Tmobile 4gLTE for AT&T UNLOCKED G900A topic

I've been searching far and wide.. Each theory to understand the failures that's inside. DUN DUN
So, anyways I have an AT&T unlocked and currently using it for TMOBILE.
I've read things from build.props changes to flashing band radios such as .33 to try to obtain 4gLTE.
Also changing APN settings. Went through t-mobile services at least 5 times through live chat and calling.
Went through AT&T live chat. EVEN WENT AS FAR TO CONTACT SAMSUNG.
Every attempt failed to help me achieve 4gLTE for Tmobile using the unlocked AT&T s5.
People said they are able to use their AT&T phones and have LTE for Tmobile.
But on the other hand people said it is not possible because the 2 carriers use different bands or radio towers or whatever.

So, can someone please tell me is there a solution to having and keeping LTE for T-mobile using an unlocked AT&T phone. It's been about 3 days of search after work and this search for the philosopher stone is tiring.

[Q] Does 2012 N7c support 4g/LTE in the UK? topic

I have been offered a 2012 Nexus 7c (part ASUS-1B32-4G) with a Date of 2013.02 on the box.

The seller days that the "4G" at the end of the part number means that it supports 4G data (which I take to mean LTE here in the UK), but my internet research on this has been inconclusive.

Can anybody confirm or deny that this model supports 4G (LTE), or is it only 3G (HSPA+)?

Many thanks!

Can't enable 4g/lte in g900p..help !!!!!!!!!!!???!?!?!?? topic

Hi guys,

I bought s5 G900P from ebay, i live in Israel and 3G works fine (sometimes with issues) ....i've trying to run the 4G...

When i enable 4G in settings, the phone reboots and then there IS NO SIGNAL......and iget a message that i'm ROAMING and lost connection ???????

I was running 4.4.4 and now it's on MOAR 6 OA6 ....but still same issues with the 4G !!!

Is there a way to make this 4G work ???
Any ROM can fix this ????

H E L PPPPPPPPPPPPPPPPPPPPPP:eek::eek::eek::eek: