I'm having problems with my iPhone 4?

I have an iPhone 4 that I've had since this past December. I take really good care of it and it's not broken or anything. But things have started happening that have been weird. This morning I was imessaging my dad and when I pressed "send", it would say sending & never go back to the name (on top of you'rse messages with a person). I checked my bars and I had 1 bar but was on Wi-Fi. So then I didn't really think much of it and was texting people throughout the day w/o a problem. So tonight I was texting(not imessaging) and it was fine. Then I pressed send and got in the shower. When I got out, roughly 20 minuets later, I checked my messages to see that it still said "sending" my text. Then I got a reply, then I said OK. Then, one of those little "typing" bubbles came up but it was texting not iMessaging so I was like wtf. It went away after a second though. Then I got a bunch of random texts and then I sent some and they all disappeared and then my phone turned off and I spent like 10 minuets trying then finally it turned back on.

ok. I was kinda rambling and i don't know if you can make sense of that. But should I take my iPhone to the apple store?

How to find out the last number that called me?

It's my cellphone. I accidentally deleted the call from the recent calls and the number wasn't saved on my contacts but I really need to call this person. It was the last call. Is there a way I can get that number. I'm using an iPhone 5.

Added (1). I tried *69 and *67 and dialing 1169 but it didn't work.

Is what this person said to me and insult or not?

I was at work and this person I work with was asking me pretty personal questions about my life. He wanted details from every answer I gave him. I told him from his questions that yes this is an iphone 5 and my parents own a dry cleaning business but it has been around over 30 years and it has been making a lot of money over the years especially this year. He then answered back by saying no wonder you have a $500 dollar phone. I didn't know how to respond to that so I just replied with yeah. But thinking about and telling my friends about it, I kinda get the impression that he was trying to insult me or something. I don't know. What do you guys think?

If you spill soda on an iPhone screen will anything happen?

This is kinda stupid, but I just got my new iPhone 4S with my phone upgrade and I'm gonna try to keep it in perfect condition, I have a case and a screen protector on, and I was drinking a monster and a drop spilled on the screen, so I was kinda worried it might burn through the screen protector and damage the screen, could that happen? Or will anything happen to the screen?

I just put a net 10 sim in a att iphone 3gs and it works?

I didn't get the phone unlock and the iPhone worked l, why do everyone. Keep saying you have to unlock it because i didn't need minds unlocked. It made phone calls and the internet worked so can someone tell me why everyone. Saying unlock it. Its a net10 sim is att

IPhone mic not working in calls?

Yes I understand this has been asked before, but I can't find a direct answer. My friends iPhone 4 mic WILL work with FaceTime, record videos ect. And you can hear her but when you call her (no its not on mute and her mic isn't muted) you can't hear her at all. We already tried the hearing aid in access ability so it's not that. Any advice?

What IPhone is better 4S or 5?

I have a blackberry ATM but don't want it anymore so I've decided to get an iPhone, But I'm not sure if I should get the 4s or 5? I've heard people say 5 is better and I've heard people say 4s is better so what one is better and why?