To the admin of that forum :

Please don't publish my previous post dealing with the problems of connection with 4G or 3G French network Bouygues Telecom.

Just now, I have tried again and really I do not understand, the connection is OK. I am not a noon and have more than 6 smartphones with a very good knowledge of Android.

So, I want to be fair and do not want to publish a wrong information or a false problem. Anyway, I really don't understand the reason why it didn't work for hours just after received and now it's working....

Best regards