I have struggled to get Onavo protect VPN to work on my China Mobile phone and have finally resolved the issue and felt that it could be worth sharing with the community.
It turns out the solution is quite easy: uninstall Onavo, take out the SIM card, connect to a WiFi network, re-download and install Onavo again and it should work! (then you can re-insert the SIM card of course)
I am currently running Onavo Protect version 1.11
Hope it helps!
Have great conferences!
E.B. for myGC