The best tricks to make your old, beat-up iPhone last until the new model comes out

Apple is very likely to launch a new 4-inch iPhone this March, and the iPhone 7 will hit shelves this fall. 

Until then, you're still stuck with your years-old device. Perhaps years of use have taken a toll and your phone has a broken screen. Or your battery doesn't last a whole day anymore. But you want to hold out until you can upgrade to the new model. 

Luckily, there are several tweaks and tricks that can help your older phone run like new, at least until the newest one comes out.

Here are a few tips and tricks for getting your phone through its last days: