We also recommend taking a screengrab of your iPhone backup screen - it shows both your phone number and its unique IMEI number, which you'll need when reporting the theft or making an insurance claim.
Your iPhone's General settings include an option to erase the phone's contents if someone enters an incorrect password or PIN 10 times in succession. This is only recommended if you are assiduous about keeping your iPhone backed up elsewhere. Using a remote lock option offers more control. Mobile security apps such as Norton and Lookout both offer this facility, which you initiate by logging in to your account online.
It's a good idea to take an image of your iPhone's backup screen, as you'll need the information displayed here for insurance purposes
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