If the device exceeds a certain temperature threshold, it will present a temperature warning screen similar to this: An iPhone showing this message might still be able to make emergency calls. To resume use of your device as quickly as possible, turn it off, move it to a cooler environment, and allow it to cool down.
A lien on property is a type of security interest placed on a piece of property, real or personal, in order to secure a debt or obligation. While the underlying legal theories are different, in a practical sense, a lien is similar to a mortgage, in that the property that is the subject of the lien is taken and sold by the creditor to satisfy the debt of the property owner.
A mortgage lien is a a form of conditional ownership of your property claimed by your home loan provider. Since your lender has a claim on your home, you need to keep up with your payment obligations or risk losing your property to foreclosure. When you complete your repayment commitment as set out in your mortgage contract, the lien goes away and you own your home free and clear.