The introduction of macOS Mojave brought a wealth of new features, but for one particular Mac, it also lost one.
With Handoff, you can start writing an email on your iPhone or other iOS device and you can pick up where you left off on your Mac; or put together a report in Pages on your Mac and add the finishing touches with your iPad on the train to work.
Extending your notebook’s battery life. Modern Mac notebooks have a very good battery life. Indeed, they should last all day on a single charge. Even so, there comes a time when you’re running low on power and need to keep your MacBook going