Look into cheap pre-paid providers. I’m in an similar situation, but with a Canadian number. I ended up on a second tier provider that charges $99/yr for unli

Look into cheap pre-paid providers. I’m in an similar situation, but with a Canadian number. I ended up on a second tier provider that charges $99/yr for unlimited talk/text (in Canada) and no data. Roaming works and I can receive SMS texts for free. I have it as an eSim in my iPhone and then have a regular Spanish provider in the sim slot for data and whatnot. I don’t actually make or receive calls on my Canadian number, though. I more or less use it receive 2fa texts and to “hold” my number. I used to pay $15/mo to have my account suspended and without any service (but “holding” my number), so this method is much cheaper.