good day, i have 3 Blu phone, a Studio 6.0 HD, Studio 5.5s and Studio 5.5. The problem i have is that all 3 don't connect to the 3G network. I know is not the the Network because i try the same chip on another brand phone and the 3G worked. i need help for a solution. if it is software or setting. The 6.0 HD use Lollipop version 5.0.2. thank you in advance for your assistant