Can an IPhone be hacked/remotely controlled?

Answer to the title of the post.

By hack, if you mean remotely controlling or monitoring your device, then...

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 if it is updated to the latest iOS/iPadOS 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 are you in sharing sensitive and valuable information pertaining to your iPhone such as Passcode, Password, etc with your friends and family members.

Be careful when sharing the device's sensitive and valuable information with friends and family members.

Thumb Rules:

1. Enable  Guided Access before handing over an iPhone to kids
2. Don't share Apple IDs
3. Don't Jailbreak
4. Don't share sensitive information pertaining to your device and payment methods
5. Beware of Phishing

zeyb wrote:

Hi,

I downloaded the new iOS update on my phone yesterday while on my works guest wifi (it’s technically unsecured but you do need an employee to approve access) thinking I was on our secured line. Now I’m worried while I was doing that my phones been hacked. My phone was ok the charger this morning (MagSafe wireless) and it restarted on its own. Nothing was updated that I can tell, still shows iOS 16.0.2 like yesterday. Am I being paranoid? I thought you couldn’t hack an iPhone unless it was jailbroken and if someone did access your information while on the wifi once you disconnect it’s stops the access. Do I need to go to the Apple Store and have the phone scanned?

?

I see no issue....

Update your iDevice - The current stable release of iOS including bug fixes, is iOS 16.0.2

Update your iPhone or iPad - Apple Support

Your phone is safe if you keep iOS updated. And there is no way to scan it, for the same reason it is not possible to install malware on an iPhone; it is completely locked down.