The diagnostic test has been created to find out if the battery of an old iPhone is able to retain less than 80 percent of its original capacity.
I guess iFixit is a little upset that Apple is setting into their territory of replacing batteries, so in response to the news that Apple is offering $29 battery replacements, iFixit dropped the price of all their iPhone battery replacement kits to $29 or less. Following reports that it was intentionally slowing down old iPhones, Apple confirmed that it does slow down old iPhones that have degraded batteries. That said, older phones' batteries may still be dying, because they've run out of full recharge cycles.
All lithium-ion rechargeable batteries like the ones used in iPhones degrade over time, but Apple devices have been experiencing a number of problems from this reduced performance.
To make an appointment, head to getsupport.apple.com, select iPhone, select Battery, Power, & Charging, select "The topic is not listed", type in that you need a battery replacement in the text box, and select Visit the Genius Bar, at which point you'll need to sign in with your Apple ID and select a time and location.
That means it's a good opportunity for any iPhone 6 (or later) owner to grab a cheap battery replacement, regardless of whether the current one is on its last legs.
Perhaps more importantly, there are reports that Apple is loosening its insistence when it comes to tests of battery health.
Anyone with a device that is an iPhone 6 or newer can take advantage of this new deal. The iPhone 7 hit in September 2016. On the one hand, this wasn't an irresponsible fix, but not telling people was a big mistake. Apple first said that it would begin the $29 battery replacement from late January 2018, with the offer running through December of this year.
Some consumers are not satisfied and are taking the iPhone maker to court.
While the post didn't note whether the battery replacements will be handled in Apple retail stores, or through a mail-in program, it did state that more details would be available on Apple's website soon. Several lawsuits have been filed seeking class action status on behalf of all iPhone owners, and are likely to be consolidated into a single case if judges allow them to proceed.