New Mi Mix does not boot

[Helmut_007]

Hello,

yesterday I updated Miui 10.
All worked fine...

Today I had a problem with an app and tried to restart the phone. The phone shut down but does not boot anymore. (The Battery/Accu was 90%)
I tried Power+Volume button...but nothing worked
My screen is black an I do not know how to start the phone.

Maybe someone can help me?

Thanks Helmut

 

[cobben]

Hello,

yesterday I updated Miui 10.
All worked fine...

Today I had a problem with an app and tried to restart the phone. The phone shut down but does not boot anymore. (The Battery/Accu was 90%)
I tried Power+Volume button...but nothing worked
My screen is black an I do not know how to start the phone.

Maybe someone can help me?

Thanks Helmut

Nothing works?

First, I would suggest leaving the phone connected to the charger for at least 24 hours.

If it still doesn't respond to holding down the power button for "a long time", try leaving it disconnected from everything for several days.

 

[Helmut_007]

OK..Thank you...I will try this....