Virtual Phone Solution - No KYC, Unregistered Phone Numbers with SMS (youtube.com)
Own solutions.
Only requires internet access, no sim, no kyc, cheap. $50 per year, US and Canada.
It can also be used as an intermediary, so you give this number to whoever, they call or text to this software, which forwards (calls or texts) it to your real phone. It would be good if he strips rtf and scans links during this process sometime. Anyway, strangers never get your real phone number, but you still get their calls and texts.