What are the signs in my iphone to say that i’m hacked!
How to know that iphone is hacked and how to solve the issue?
iPhone 11 Pro Max
How to know that iphone is hacked and how to solve the issue?
iPhone 11 Pro Max
Keep the iPhone updated to the latest iOS always and never Jailbreak. That's it.
iOS / iPadOS devices cannot be hacked or infected with Virus / Malware / Spyware unless you have intentionally downloaded spurious software or unauthorized apps directly from the internet and installed them on your device or/and have Jailbroken.
It (Hacking) also depends on how careful you are in sharing sensitive and valuable information pertaining to your iPhone such as Passcode, Password, etc with your friends and family members.
Be judicious when sharing the device's sensitive and valuable information with friends and family members.

If you don't reckon what is said above is true then you have two options...
_Stefan1608 Said:
"What are the signs in my iphone to say that i’m hacked!: How to know that iphone is hacked and how to solve the issue?"
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Ridding of Suspicious Activity:
Set this Up Anew:
If you are so concerned, then reset your iPhone, as if you were to sell it. Perform as interacted here, including the iCloud Logout and backup creation: What to do Before you Sell, Give Away, or Trade in your iPhone, iPad, or iPod touch - Apple Support
What are the signs in my iphone to say that i’m hacked!