Your biggest Pet Peeves when people use smartphones?

I love it when people use their phone to listen to music in public (without earphones) - the sound quality is fantastic and everyone gets to enjoy their music.....

My biggest pet peeve applies to feature phones too: talking loudly in a store, restaurant, other contained area with people who don't want to hear your end of a boring conversation. Honestly, people... they can hear you if you talk QUIETLY on a decent phone; there's just no need to shout. Uber irritating.

Selection/Keypress sounds drive me up the wall (also game sounds) , I cannot stand listening to music played through a phone without headphones (this applies especially to idiot teens blasting dubstep/skillrex), oh & if you do have the brains to use headphones, please don't turn the volume up so high that I can hear a persistant 'tch-tch-tch-tch', and pretty please if we are having a conversation and you get a text, don't INSTANTLY grab your phone to check it (fair enough if it's a call it might be important)

In the restaurant, and it's so damned quiet cos nobody speaks. It's all heads down with thumbs going hell for leather. Even the barman has his head down and the waiter is in the back

I have 2 major pet peeves with people and their smart phones and phones in general.

1. When they're nearly yelling their conversation on the phone and they think they're the only ones around and what they're talking about should be behind closed doors as it's just trashy.
2. When you're serving a person and being polite then next minute their phone rings and they answer it while youre talking to them and they expect you to wait till their finished when you've got other people waiting. If they excuse themselves I'm all done with that but I'm not here to wait on them hand and foot. it's common courtesy. imagine if I answered the work phone when they were talking to me and I just fobbed them off.

Well, I have a few pet peeves when it comes to people with smartphones. Actually, It comes to cell phone users in general. It took me many, many years to get over it when people walk down the side of the road using an ear piece. I don't mean just talking, using the ear peice. I mean broadcasting everything like their talking to their imaginary friend. There are times, I still find myself thinking they might be crazy and just like to shout at themselves in public. Oh ya, also when people ride down the road on their bicycle with one hand on the handle bar and the other hand texting on their phone, completely unaware of everything around them. It's very common where I live. Arg, I hate it.

I hate it when you hear someone's phone in a movie theater especially when you hear and see the short clip about muting cell phones, no regard to the other people who came to enjoy themselves.. grrr... :-(