https://www.ifixit.com/News/apple-is-locking-batteries-to-iphones-now
By activating a dormant software lock on their newest iPhones, Apple is effectively announcing a drastic new policy: only Apple batteries can go in iPhones, and only they can install them.
If you replace the battery in the newest iPhones, a message indicating you need to service your battery appears in Settings > Battery, next to Battery Health. The "Service" message is normally an indication that the battery is degraded and needs to be replaced. The message still shows up when you put in a brand new battery, however. Here's the bigger problem: our lab tests confirmed that even when you swap in a genuine Apple battery, the phone will still display the "Service" message.
It's not a bug; it's a feature Apple wants. Unless an Apple Genius or an Apple Authorized Service Provider authenticates a battery to the phone, that phone will never show its battery health and always report a vague, ominous problem.
(Score: 2) by ElizabethGreene on Friday August 09 2019, @09:36PM
I got a ZTE Blade spark for $80 last year. It's a good phone with a massive screen. If it had more ram it would be a great phone.
I thought the battery was tool-less replaceable when I bought it, but I was wrong. Disassembly isn't bad though, the rear case is held on only by adhesive and the same adhesive I use on the Samsung J3 fits it.