Can I control another iPhone remotely using iCloud information from another device?

"Appple Id: so I was just wondering, is it possible to control another iPhone from another device iPhone Mac by having the iCloud information you would be able to do what exactly I’m just curious cause I feel like somebody has access to my phone and can change the settings remotely by having access to my iCloud in my Apple account"

-------

Remote Access to iPhone:

What makes you suspect this? If someone have access to your Apple Account, and you have items toggled on in iCloud Settings, then all of those items will be synced between devices associated to your Apple Account. As for cloud storage, that is just data --operating system files are not included in iCloud Settings. See here: What does iCloud back up? - Apple Support

Turn Off Screen Mirroring:

The only way to set access is through screensharing ("Screen Mirroring" as it is called in iOS)

1. Go to: Settings
2. Tap: Screen Time
3. Tap: Apps & Websites
4. Tap: Screen Mirroring
5. Tap: Block App
6. Tap: Block App

Turn on Lockdown Mode:

So, if you are concerned for a cyberthreat, then turn on Lockdown Mode:

1. Go to: Settings
2. Tap: Privacy & Security
3. Tap: Lockdown Mode
4. Tap: Turn On Lockdown Mode (very-bottom of screen)

Secure your Info:

If concerned for device access, then (A)verify your devices, and (B)secure your account. Open a new eMail addressee d use that for your Apple ID.

1. Verify your Devices:

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

then...

2. Modify your Credentials:

Having been stollen, someone lily has your credentials. So, by all means, modifying them.

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

III. Report Items to Apple:

So, report phone call's and messages info to Apple and others. Use my User: Using the Photos App to Report Scams - User Tip

Hello~ Have a look here…

If you think your Apple Account has been compromised - Apple Support

~Katana-San~