My fiance is constantly on his iPhone?

My fiance has an iPhone from work, but aside from that he's had a smartphone ever since I met him. It didn't used to bother me before, but now I started getting really mad that he's constantly on his phone. He's either texting his buddies and sending them stupid pictures and having pointless conversations (even if he was just hanging out with them) or he's on Facebook browsing or watching stupid vine videos. All THE TIME. It's the first thing he does when he wakes up, and after work, and before going to bed. I understand, I have a smartphone too and like browsing through it, but not that much and definitely not when I'm spending time with him! I mean, he can't even hear what I'm saying and I have to repeat myself three times, because his attention was glued to his phone screen. It makes me so mad, he keeps being on his phone and laughing out loud at stuff there. He even takes it with him to the bathroom! I tried talking to him about it and playfully hid his phone and he got Super mad, demanding me to give it back right away because he's texting his friends. He accuses me of being jealous that he has friends to talk to. I have friends too, but it's called respect for me to put your phone aside when spending alone time! He even does that while eating and in restaurants with me.Am I going crazy? I feel super sad that he'd rather be on his phone than have a conversation with me and I don't know anymore how to make him realize this. I know he's not cheating on me for sure. And I really want him to realize how his behavior is making me feel, but I don't know how to (destroying his phone is not an option since it's a company phone).

If I was you the next time you and him go out get on your phone! Maybe then he will realize what is going on. When he tries to talk with you acknowledge him and then get back on your phone. Either it will work and he will stop doing it or he will not. If he doesn't might want to consider breaking up with him.

Well first off its RUDE! And hes addicted to it. Its selfish too, set boundaries now because it won't get any better! If he doesn't comply then back up. What if your on the phone when he wants your attention?
If hes not into spending time with you doing real things like walks, or cooking with you or cleaning, or spending time with future kids, having hobbies together instead of being on his phone. It is the way the world is going and sometimes it is necessary but set 15 to 30 minute limits. If he has a problem with limiting his usage he doesn't value the relationship he is in, sorry but…
there's a time and place for everything!

I find it completely maddening that people can't put their phones down for 5 gd minutes. I couldn't stay with him

LOL THIS IS HILARIOUS OMG ok ok look up the video I forgot my phone by charstarleneTV you'll totally connect to it I understand how annoying it can be when you really want to spend quality time with someone but they're FREAKING glued onto their phone I think thats mainly why i don't hang out with my best friend anymore because all she does is go on her phone and she doesn't care to acknowledge me when I'm talking to her IT'S So FRUSTRATING!