Will i know it if my iphone is hacked?

I been told that iphones can get hacked, and told by others that they can't. It has been acting weird lately and i got a weird text message. But i read online how people can remote control your iphone when they hack it even if they don't have ahold of it. So my question is. IF they were to send my friends a bunch of crap text messages. Would it show up in my outbox so i would know it happened. So i could tell my friends that it was not me? It happened before with my old phone, but that was not an iphone.

They can't be hacked unless you jailbreak it and start install garbage from outside the appstore. Otherwise nothing to worry about.

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