How can I stop an ex from accessing my phone, texts, and location?

Start by documenting exactly what they know and when they mention it. That can help distinguish direct access from guesses or information they’re getting elsewhere. If they know the contents of private texts, treat your Apple account, email, password manager, and messaging accounts as potentially compromised. Change passwords from a trusted device, enable two-factor authentication, and use each service’s option to sign out of all other devices and browser sessions. Check for unfamiliar trusted devices, recovery numbers, forwarding rules, and shared accounts.

Because this may involve stalking or unauthorized monitoring, focus on safety as well as technical cleanup. Save screenshots and write down dates, statements, and account alerts before resetting anything. If you think the person could react badly, make changes from a trusted device and consider contacting a domestic-violence or stalking support service for a safety plan. You can also report suspected unauthorized access to law enforcement or your mobile carrier, especially if there are threats or continued access after you secure the accounts.

If you can safely do so, back up only the important personal data and perform a full factory reset, then set the phone up as new rather than restoring every setting or unknown app. Update the operating system first, use a new device passcode, and avoid letting anyone else know it. Also review location sharing, photo albums, family or household sharing, installed configuration profiles, VPNs, and Bluetooth connections. Change your main email password too, since email access can be used to reset other accounts.