SMS not working

Hi guys, sorry, but I have a problem : I can’t send any SMS. The system fails to send SMS.

Samsung S4 mini GT-I9195
Version system : 0.7-2019080919577 (latest)

Using Message : sending SMS fails
Using QKSMS : sending SMS fails

Phone number written as follows
+336 XX XX XX XX
6 XX XX XX XX
06 XX XX XX XX
06XXXXXXXX
gives the same results : SMS not sent

This phone number sends me SMS, I receive, but I can’t answer it.
Of course the phone call works, but no SMS.

Any idea ?

Thanks

Hi @tunedomi Is this the first time you have flashed /e/ on your device or did you have it earlier as well. Was SMS working earlier.
Have you tried sending SMS to different phone numbers - do they all fail.

Hi @Manoj , thank you for your ideas.
It is the first flashing of this device, so I have no past experiment.
Since I’ve posted my question, I have made some tests with another phone number and it works. So I suppose there is a particular problem with this number. I will look further, but the system works, and you can forget my question.
Have a good day.