Someone reported my iPhone lost or stolen, how do I get my service back?

Hi Megan_okan,

Thanks for contacting Apple Support Communities!

We understand that your iPhone was marked as lost via iCloud and you'd like to remove it.

You can sign into iCloud via a web browser on a computer to remove Lost Mode as outlined here: Use Lost Mode in Find Devices on iCloud.com

"Turn off Lost Mode on an iPhone, iPad, iPod touch, or Apple Watch

1. In Find Devices on iCloud.com, click All Devices, then select the device that’s in Lost Mode.
2. Click Lost Mode, click Stop Lost Mode, then click Stop Lost Mode again.
3. You can also turn off Lost Mode by entering your passcode on the device.

Note: If you had any cards suspended when you put your device in Lost Mode (credit or debit cards for Apple Pay, or student ID cards or Express Transit cards), when you turn off Lost Mode and sign back in to iCloud, you can use them again."

You may also consider ensuring that your Apple ID is secure so no one else has access to your Apple ID account: If you think your Apple ID has been compromised

"Make sure your Apple ID is secure

Because you use your Apple ID for so many Apple products and services, you should make sure that your Apple ID is as secure as possible. You should be the only person who knows your password and can sign in with your Apple ID. If someone you don’t know or don’t trust can sign in with your Apple ID, your account is not secure.

Your Apple ID might not be secure for the following reasons:

• Someone else created an Apple ID on your behalf, or you’re using an Apple ID that was already signed in when you received your device.
• You’re sharing an Apple ID with family or friends. Your Apple ID is your personal account. If you want to share purchases with a family member, use Family Sharing. With Family Sharing, you can share a calendar, photos, reminders, and more without sharing your Apple ID.
• You don’t recognize the Apple ID that is signed in on your device.
• You shared your password with someone else intentionally or unintentionally. For example, someone else selected your password for you, you told someone your password, or you entered your password on a phishing site.
• You don't have control of the email address or phone number associated with your Apple ID.
• Your password is weak or is compromised.
• You share your devices with someone else, your devices are not protected by a passcode, or your passcode is easy to guess. 

If any of the above are true, you should reset your password as soon as possible and review your account information."

This can prevent anyone from signing into your iCloud account to mark your devices as lost.

If you're interested in learning more about how to keep yourself and your data safe, this is a great resource for you: Personal Safety User Guide

We hope this helps.

Take care!