2. Just flash a stock rom. You'll have a brand new device without root.
Do you think your method could works on a Che2-L11 for Europe, with a Kirin 620 proc. ?
Thank you very much!
Yes, until now, just 2 or 3 posts about this fix on OP community.
But we have to wait for some feedbacks. In my case, nothing special. Everything fine with this 5.1.7
You can try "True Phone". A very good dialer/contacts app. Manage well the dual sim.