I thought countless reports of users complaining their iPhone's batteries lost their capacity thanks to awful iOS versions (including that 11 fiasco) was enough to convince you.
These batteries are s.hit and never last enough, losing their capacity over time. If there's one thing I hate is having to recharge every single day.
So you have to replace yours in a few years (if iOS doesn't make the device useless - and you can't remove these updates once they are there - another proof Apple does this practice). This may seem cheap for US residents but it's expensive in the rest of the world.
Especially if you are talking about an iPAD.
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iPad's battery is not designed to be user-replaceable. Apple will replace an iPad that does not hold an electrical charge with a refurbished iPad for a fee. As a different unit is supplied, user data is not preserved. The refurbished unit will have a new case. The warranty on the refurbished unit may vary between jurisdictions.
Independent companies also provide a battery replacement service, returning the original unit with new battery but original case. Alternatively it is possible for a technically competent user to buy and install a new battery. The task does not require soldering, but is technically challenging.
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Besides, these Apple products always get a low score from iFixit, meaning once they break there's no repair. You are forced to buy a new one. Did you know the Airpods got a (rare) zero score?
https://www.theinquirer.net/inquirer/news/3001574/apples-airpods-get-a-rare-zero-score-from-ifixit
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The AirPods, which have already come under fire for costing £65 to replace when losing them is almost built into the design are, according to iFixit, poorly constructed, almost impossible to repair and unrecyclable."
Really, I would be more concerned if my device would need to be recharged more often instead of caring about a headphone jack or making these products lighter than they already are.
How about BT headphones that don't need to be recharged often? There were days I had to do this 3 times with my Airpods.
And what happens once your Airpods (or whatever BT headphone you use) needs to be recharged more often over the years? I bet their battery won't be in pristine condition in the future. While the wired versions will last many years, provided you take good care of them.