Apple wishes to ensure that battery replacements in a device they designed and made are carried out by authorised repairers. Quick...to the keyboards! Rah rah rah! Rabble rabble rabble! The Sky is falling down etc. etc. etc.

What of the countless unscrupulous dealers and repairs shops who put subpar wares in your device?
Does that battery have the ability to report the number of cycles on it? If not it is the same problem. The battery health is determined based on several factors, including current cycle count. If the phone does not know the cycle count on the replacement battery, it cannot accurately assess the health of that battery.
As stated in the article and release, the phone will work perfectly fine. The only effect is that the health status reporting function will be disabled as Apple is not able to properly assess battery health. Seems like a reasonable approach to me. Rather than reporting potentially false data, do not report anything.
I see a class action lawsuit in the making here. It seems like Apple is using a scare tactic to reduce competition.
A replacement battery doesn't automatically mean the phone needs 'service'.
Unless there is an obvious and verifiable service issue, battery status should indicate nothing more than the battery may not be an Apple factory replacement.
I know for a fact that Range Rover does thisSo? Swapping a genuine OEM transmission from one BMW to another identical BMW not only presents a warning, but the vehicle won’t even drive.
Sure it can. MacBooks have been doing it for years. It's a basic calculation of the cycle cound and how long it takes to drain to calculate the maximum number if MAh the battery can hold.
Except a genuine OEM battery salvaged from another iPhone presents the same warning.
Ah, I didn't realize that. So it has been confirmed that this chip is responsible for battery health monitoring? Or is that just speculation from those who are upset at this functionality? I am genuinely asking.Of course the battery can report its health. The entire health reporting and life cycle info is stored on the battery pack. This info isn't stored on the phone.
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...Seems like a reasonable approach to me. Rather than reporting potentially false data, do not report anything.
So what’s the problem exactly? Apple didn’t prevent you from replacing the battery and the phone worked just fine afterwards.Seems like a very user-vindictive policy. Shame on Apple. My nearest authorised Apple Centre is more than an hour away. I replaced the battery on my iPhone 4S and funnily enough it didn't explode or have 'performance issues'.
In light of MacBook Pro 2015 models being banned from airline flights over battery issues, and the Galaxy Note 7 batteries catching fire in peoples pockets, this seems smart. Apple should absolutely play it as safe as possible regarding batteries.
Ah, I didn't realize that. So it has been confirmed that this chip is responsible for battery health monitoring? Or is that just speculation from those who are upset at this functionality? I am genuinely asking.
As I said, this seems like a reasonable move on Apple's part. The overall functionality of the phone is completely unaffected save for the battery health status that Apple cannot confirm. If that chip does perform the health status functions, what is to stop a lesser quality battery manufacturer from replicating it and fooling the phone? Again, if one errs on the side of caution, you do not report data unless it is verified to be accurate.
Except a genuine OEM battery salvaged from another iPhone presents the same warning.
Exactly - this would affect the re-sale value of iPhones that have been repaired in non-Apple service centres or by users themselves.
Source?It's been confirmed.