Well I ne'er had a cell phone my whole working life, did have page, and did use old coin operated pay phone that were everywhere. Today pay phone are only in Airport I am told as I do not fly. Plus apprently they are used with a credit card.
Do have cell phone, and do use it infrequently, it is for an emergency. Yes you can send & get TEXT MESAGE, that I have. Calling is faster, more efficient, and I know a answer to simple question fast.
I get it that some people live on phones, love living life texting, and being on Facebook, Twitters, and other social media platforms.
If I was plying in a Bar Tournment, and my opponent pickup their Cell phone and started long conversation. I might say play pool, or take the loss of match, set or what ever. If it's a Tournment, I would ask TD to disqualify person.