Can a iPhone be hacked into?

I think my iPhone has been hacked here are many reasons why:
1.It just started freezing real bad
2. My friend said I cursed him out over text when my iPhone was dead for a week cuz I had to buy a new charger
3.It won't let me do anything on social media if I go to facebook it kicks me off when I got to twitter it kicks me off and same for YouTube
4. When I call someone I freezes bad

Those are my reasons

Well restore it through iTunes if need be.

No, iphones are by far the most secure, all code in appstore is reviewed first so you don't get that type of garbage in there.

  • What should I do if someone hacked into my Apple ID? Last night, someone went into my Apple ID. This person sent a plenty of abusive messages to my contacts. I know I didn't do it, because I was just busy watching videos while that person was sending messages. So I have blocked all my contacts to keep low from this person. Well I used to a iPod touch and I lost it last year in my school. After when I lost it, someone must have found it and went inside that account. So is there anyway I can do? I own a iPhone 6S btw
  • What can I do if my iPhone is hacked and keeps sending international text messages? My iPhone has been sending out international texts. Is it hacked? Also I jailbroke my phone. I'm using Tmobile( doesn't support iPhone) So does anyone know how to fix it?
  • Is my email being hacked into? I was checking my emails on my iPhone and for one of my accounts a pop up said something like "POP3 verify your account info" but my account is up-to-date. I can login into it and send and receive emails fine. So why did that pop up appear if everythings fine? Was I getting hacked? Answers will be appreciated thanks.
  • I had an iphone 4s stolen can it be hacked? It was updated with the iOS 6 software and had a hard 4 letter passcode to hack. All the websites say you can't hack the iphone 4s. My mom called the phone twice and the person responded over text "I can't talk right now… Call you later." Again the password wasn't something simple like 1234 or anything anyone would know about me like my birthday or year I was born. My family was the only one who knew my password as well. How did they get into my phone?