The implication of a warranty is largely different from an actual warranty. The Oxford definition of the word “imply” is to strongly suggest the truth or existence of something not expressly stated. If you purchase any item, it is implied that the object will perform its intended function. For example, if you were to purchase a pen, you expect the pen to be capable of writing without inflicting any sort of harm to its user.
The warranty of the product’s function and safety is implied. The same goes for electronic devices whose intended purpose is to add to your experience, not put you at risk. A charger, for example, should be purchased without the worry that it will cause your phone to overheat and burn you. Even though this may not be explicitly stated on the packaging of the product, it is an implied warranty.