my iphone has been hacked

Leesee66 Said:

"my iphone has been hacked: My iPhone has been hacked and they have accessed my banking app on my phone and accessed my credit card info. I have deleted the app what else do I need to do now? [...]We don’t know how the bank app was accessed our bank said it was through the iphone - sorry we don’t know"

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Troubleshooting a Hacked Device:

It was you account that was attacked --not your iPhone.

So, Four Things Here:

A. Modify your Credentials:

Having so much suspicion, consider modifying your credentials, ASAP, starting with a new password.

• Modify: your login credentials (using both a New eMail and a New Password) for Apple and each and all sites
• Associate: a different method of payment to your account
• Enable: Two-Factor Authentication for Apple ID PayPal and for all other accounts that have such an applicable option

B. Verify Your Devices:

Verify that your the devices logged in to your account or officially yours, by using this link: Check your Apple ID Device List to See where you're Signed in - Apple Support

C. Report this to Apple:

Have any suspicious items on the screen (i.e. messages)? Use my User Tip: Using the Photos App to Report Scams: - User Tips

and...

D. 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 backup: What to do Before you Sell, Give Away, or Trade in your iPhone, iPad, or iPod touch - Apple Support

It will be helpfull to know how was your phone hacked