If you have an iPhone 6 model or later, you should probably go replace the battery for a discounted rate at your local Apple Store.
Apple is now offering battery swaps for $29 (down from $79) a few weeks earlier than it originally promised. The decision to offer such low-priced battery swaps comes days after the company issued an apology for secretly slowing down older iPhones with software updates to prevent them from taxing the battery to the point where the phone might shut down unexpectedly.
