Sorry iOS users, Android only :(
If your phone is rather old and starting to feel a bit slow, try this trick. It speeds up animations drastically, making your phone feel way faster. Open up Settings, scroll down to 'About device' or similar, and head into 'Software Info'. Tap the 'Build Numer' 7 times. This enables developer options. Head back to the main screen, where you should now find 'Developer Options' directly above 'About device'. Tap it and scroll down to 'Drawing'. You should see the different options that are all set to 1x. Click one and change it to a faster speed, like 0.5x. This means the animation for that option will be 0.5x the original one, so twice as fast. Do this for all the options. Once done, watch your phone fly. It makes your phone feel WAY faster, and greatly speeds up even those old phones. Thanks for reading and have a wonderful day :)
