Finally, I made a reset factory.
Miracle, all work !!!

@fredo333 Sorry, I could not modify my post

![text alternatif](

I typed this: fastboot flash bluetooth bluetooth.img

It comes this:
target reported max download size of 536870912 bytes
sending 'bluetooth' (556 KB)...
OKAY [ 0.031s]
writing 'bluetooth'...
OKAY [ 0.010s]
finished. total time: 0.042s

But it did not work.
What I made wrong ?

Hi,
I got the same trouble with mi a2. First let inside one sim and reboot.

Bonjour,,
J'ai eu le même probleme. Je n'ai laissé qu'une seule carte sim et j'ai redemarré. J'ai eu internet de suite, mais les mms,ça a été plus long...j'ai rechargé plusieurs fois les mms avant de pouvoir les telecharger et sur une periode de 48h
.

Hello,
Thank you for asking. I've the same problem

For my mi A2, fingerprint scanner works

@keneda

I did nothing but this morning I received and send mms.
Best regards,
Frédéric

Finally, I can not receive or send Mms. But my configuration seems right. My carrier is “free mobile” in France as it:https://www.echosdunet.net/free/configurer-mms

Frédéric

@ian Yes
I did not know wich it was my sim with contract...
sorry,
best regards,
Frédéric