Have you tried any of these suggestions?
Thank you for your link. I read the whole article, but it does not seem to add any more information.
I use the stock messages app of I9505. I has about all the same settings as mentioned on your link, and maybe more (
Add to spam phrases).
The problem, as I told you before, is that theses messages are not coming from any phone number, they just do not have one, and if I long press on one of the conversations to show the context menu and then click on
Add to spam numbers, and then click on OK I receive the error message
Invalid phone number. There is no other possibility to add a sender to spammers.
Therefore, I believe these messages can only be received through
Push messages or Cell broadcast (CB). Can you, please, look into these settings on the Galaxy stock messages app, and tell me how to adjust them, so I stop receiving these messages?
One of the senders is not my phone service provider, my my IP (I have different ones). Others are shops os which I have cards and to have them I had to give my phone number (again, these messages come without a phone number).
If I have not explained well enough, please tell me what I missed.