In 2017 Apple acknowledged it had been throttling iPhones with degraded batteries. This resulted in a class-action lawsuit and a $500 million settlement. Lifehacker has a guide on how you can collect a cash payment of $25 per eligible iOS device.
You'll qualify for this settlement if you own(ed) one of the following iPhones before December 21, 2017:
An iPhone 6, 6 Plus, 6S, 6S Plus or SE that ran iOS 10.2.1 or later
An iPhone 7 or iPhone 7 Plus that ran iOS 11.2 or later
I just checked and found that all four members of my family have eligible iPhones, and I submitted claims for all of them. Thanks for the $100, Lifehacker!