SurvivingInfidelity.com^®

Not sure if this is the best place for this question but here goes.
My H is a porn/sex addict in recovery. Maybe. He's not engaged with rl people for a long time but online porn has been a longterm issue. I have no reason to believe he's engaging now but I no longer look.
There are blocking apps and controls on his phone but he definitely was using it for skanky stuff in the past. He's getting a lot of really yucky texts. Now, I get spam texts but never of the XX variety. Why is he? Is it just a random thing?
He's a very unsavvy tech user. He frequently answers calls that he doesn't recognize. He often clicks on web links that are clearly click clickbait. I don't think he has clicked on links sent by text but I wouldn't be surprised if he had. He says he doesn't even see these raunchy texts, he's awful about keeping up with text threads and/or voice-mail.
Assuming he's not currently porn hopping, is there a good way to stop them from coming?
TIA
L

Hi Lionne! You could block the numbers. Does he still have the same phone number from when he was acting out? It could be that his number was sold.

Yes, same phone number. Back in the day when he was active in RL, he didn't have a smartphone, no texting function either.
I can't block numbers on the Verizon messaging app, I can forward them to Verizon as spam.
He has accessed porn on that phone.

Mods, please lock this. I'm going to repost elsewhere and see whether I get more responses/