Most of the 3rd World don't have cell phones. In fact more than half the worlds population indeed may not own one. The western world, specifically Europe, the UK, North America, and Canada, have a very heavy concentration of mobile phone owners, and it is quite strange in certain places not to own one. But in the grand scheme of things who the fuck cares? The only people who buy a phone to stand out are stupid children and there ignorant parents, the children that have grown up to become materialistic over grown gametes.
On a side note. It still may be worth investing in one however. A mobile phone can set you back only £5 - £10. Then put a little research into finding out if theres a common service all your friends use, then check around service providers to see what there pay as you go sims offer. Essentially, alot of providers now offer free texts to people on the same network, and I can swear I've heard to words "free texts for life" on a advert recently. So yeah, half an hour of research and £5, and you have a means to quickly communicate with someone from anywhere. The freedom that provides is worth such a small amount of money. Don't go on contract for a up to date phone however, it's just not worth it. A mistake I am guilty of.
Also, mobile phones put out no where near enough radiation to be a sincere cancer risk ¬_¬
Not unless your one of the people you mentioned in any case.