If you use Gmail™, you already have a Google™ account—if not, you can create an account during setup. Signing into your Google account lets you access, sync, and backup your stuff. You can see your Google apps, contacts, calendar, photos, and more. Tips » To add, edit, or delete accounts, swipe up > Settings > Users & accounts. Step one is to report the lost phone to the police. Even if you don't think a lost phone is worth a call to 911, having a police report handy can help when dealing with insurance if you have it. Next, cancel any credit cards you have saved on the lost phone. If a thief manages to break in, the first thing they'll look for is credit card.