GPS issue when Mobile Data is enabled
After a few days of research I discovered that the problem it is a conflict between some Android devices and some 3G networks. (In my case, in Brazil)


Bug report (English): https://code.google.com/p/android/issues/detail?id=81140
TecMundo News (Portuguese): http://www.tecmundo.com.br/vivo/102386-sinal-vivo-interferindo-gps-celulares-afirmam-usuarios.htm
Forum AndroidPit #1 (Portuguese): http://www.androidpit.com.br/forum/650921/motorola-moto-x-2014-problemas-no-gps-do-moto-x-xt-1097
Forum AndroidPit #2 (Portuguese): http://www.androidpit.com.br/forum/654679/motorola-moto-g-2014-estranho-sinal-gps-cai-quando-ativo-3g-no-chip-da-tim
Problem demonstration (Portuguese): https://youtu.be/CXkJUN8G83k
Forum OuterSpace (Portuguese):
http://forum.outerspace.com.br/index.php?threads/moto-x-e-moto-g-com-problemas-no-gps-tim.382402/


Sorry about the portuguese content, but I could not find more details in english communities.

I contacted Motorola, I will send my devices for repair. I believe it is difficult to be a solution, but I will update my answer whenever I have news.

## UPDATE 17 Out 2016

My Moto X2 was sent for repair and returned with the same problem, I'm trying a new contact with the manufacturer.