What can a scammer do with address and date of birth?

But even simple details such as your full name, date of birth and address can be used to commit identity fraud. If they get their hands on those documents or pretend to be you online or on the phone, they might then make financial applications and transactions in your name.

Can you see if someone is checking your location on iPhone?

Android and iPhones iOS do not notify or give an indication when someone checks your location. There is a brief icon displayed in the notification bar when GPS is used by location services. Any number of apps or system processes trigger a location check. Only your mobile service provider can track you continuously.