The Apple iPad Pro is seen above. Workers carry them around offices. Entire stores have traded their cash registers for iPads. The flagship Apple tablet isn't just a novelty item for watching movies on the sofa; it has become a major workhorse, transforming our domestic and professional lives. Add the power of Siri, and your iPad becomes a full-on virtual assistant, especially with a few little-known features.

The battery life of an iPhone is something even Apple aficionados complain about. With more and more applications being available for the device, increased use of its camera and background task-supporting applications such as Siri, battery life consumption also increases. Turn off "Hey Siri": The iPhone's voice assistant Siri is always keen to listen to you. By default, it keeps working on the iPhone in the background, which means it also consumes battery. In case you don't have the need for it, you can actually turn it off.