I bought 2 ZP700 that has MTK MT6582 processor.
In one of them when I try to used the WCDMA band I lost (drop) the signal. You can see the video:
youtube.com/watch?v=a6DPLloNMM8 ( I can't publish a link)
This is the phone information (works fine)
And the other phone doesn't work
The phone has problem to use the WCDMA band. In that case the band of my country is 850 Band that is supported for this device.
Can I change the base band ? What things can i do to fix the problem with the WCDMA Band ?
Thank for your help