GPS and Google Maps and the device go offline - Android Q&A, Help & Troubleshooting

Hi
A week ago I changed my telephone-operator (now I have a new virtual operator full MVNO). Before this operation, my device worked fine.
I changed the sim, do a factory reset and installing the new updates (Google Maps, Chrome, WhatsApp, ...) without problems.
But now I have a problem: if I have GPS on and open Google Maps, my device will go offline (but the 3G-connection-data-indicator is on). Maps, Chrome, WhatsApp, ... don't work because I am offline.
If I want to surf on the net after Maps+GPS using 3G, I do double tap on connection data indicator (to restart connection data) and my device works fine, without problems. But I don't use Maps+GPS.
I used CCleaner and reinstalling Google Maps without success
So:
a) Google Maps and GPS is on (in 3G mode): my device will be offline
b) Google Maps and GPS is off (in 3G mode): no problem
c) Google Maps and GPS is on (in WIFI mode): no problem
d) Google Maps and GPS is off (in 3G/WIFI mode): no problem!!!!
I have a smartphone no-brand (Huawei Y540-U01) whit Android 4.4.2 no root (whit security patch of 2016-10-01).
Have you got a solution? Thanks!

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hey all. in need of some assistance
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