Cellphone numbers can very easily be abused to steal money (premium SMS), to steal my identity, to spam me in the middle of the night, to pull me out of the "zone" by calling me/messaging me during work hours, to track my location while roaming and probably a lot more stuff that's not currently apparent to me.
Also, my phone number is known to some identity providers I trust. If they sent me an SMS asking me to click a link, I might be inclined to follow that link. This is quite right despite the sender being very easily spoofable because nobody but these identity providers know my phone number.
Also, my phone number is known to some identity providers I trust. If they sent me an SMS asking me to click a link, I might be inclined to follow that link. This is quite right despite the sender being very easily spoofable because nobody but these identity providers know my phone number.
No. I'd rather be very careful with that number.