Unsolicited chatter from my iPhone!

I own an iPhone 5SE. I'm not sure which version of iOS I'm running, but I know it was updated within the last weeks.

While lying on my desk, my phone suddenly started talking. I don't remember what was being said, but when I picked up the phone there were messages scrolling up the screen. I'm not sure that the phone's vocalizations corresponded to the text. Most of the messages I saw were exhorting me to call someone. For example, "Call Ryan." I don't know whether any of the names represented people I actually know, because the messages did not include last names.

When I saw a message about Apple Pay, I decided it was time to shut down the phone. It sure feels like my phone has been hacked. At this point, I'm afraid to turn it back on. If a reset will fix the problem, I'm willing to wipe everything out and start from scratch. I'm guessing that someone at the Sprint store or an Apple Store could help. What do you recommend?
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Eoin OSullivanConsultantCommented:
I doubt you've been hacked. Hacking of iPhones is both rare and if it is done properly would be invisible to you. It sounds more like the side-effects of an iOS upgrade.
If you've updated to the latest iOS there will be a number of new features which you'll be asked to enable or activate and Apple Pay is one feature of recent IOS updates. A large number of your apps will also be upgrading following and iOS update and some of these will be asking you to enable permissions/access to allow them to work.
Follow these 3 steps

1. Don't panic
2. Don't panic
3. Restart the iPhone and read the instructions/options that appear for each application.  If you no longer use or recognise the application then don't allow whatever permission it requests.  Open the Settings app on your Home screen and look at the options such as Notifications where you can control which apps can display visual and audio alerts on your home screen.  And Privacy where you can control which apps can access your location.  Finally look the the Siri & Search option and turn off SIRI if you don't want the iPhone constantly listening to what you say!! ;-)

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JohnBusiness Consultant (Owner)Commented:
I have Siri turned off as I do not need it. Otherwise, there is no chatter in my iPhone SE (IOS 11.2.6).  I agree with the above to restart the phone and check again.
Andrew LeniartIT Consultant & Freelance JournalistCommented:
The same thing occasionally happened with my iPhone 6. I'd be laying in bed and Siri would just start saying random things for no reason while the phone was locked. Scared the crap out of me the first time it happened.
It sure feels like my phone has been hacked.
Rest easy, being hacked is highly unlikely. I've heard of this happening to others too.
What do you recommend?
Call a priest :)
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Dr. KlahnPrincipal Software EngineerCommented:
Andrew said:

Call a priest :)

But Andrew, all Apple devices explode in sulfurous smoke when touched by holy water.
Andrew LeniartIT Consultant & Freelance JournalistCommented:
But Andrew, all Apple devices explode in sulfurous smoke when touched by holy water.
Hey don't laugh.. Had I heard the word "Dimi" come out of my phone, I'd have got my shotgun out of the cupboard, given it both barrels and replaced it with an Android!
babyb00merAuthor Commented:
Well, the last time I had an iPhone behave this way, the screen had been compromised and moisture had gotten inside. I replaced that iPhone with this one. As far as I can tell, the screen is still intact and no moisture has gotten inside. I have turned it back on, and it seems to be behaving normally.
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