4 ms·
The problem here isn’t that iOS throttles the CPU when your battery can no longer properly power the phone. (This is a really nice feature, compared to, e.g.,
by jmull 9y ago
The problem here isn’t that iOS throttles the CPU when your battery can no longer properly power the phone.
(This is a really nice feature, compared to, e.g., sudden shutdown when voltage drops too low to run the CPU at normal speed.)
The problem is that iOS doesn’t alert you about what’s happening. If it said something like, “Your battery needs to be replaced. Until it is, your phone will run with reduced speed.” Then you would have the information you need to make an intelligent choice.
You have to suspect Apple doesn’t do this because if you don’t know what’s going on you’re likely to assume your phone is just old and needs to be replaced.
- briandear 9y agoIt does do that.. it tells you your battery needs servicing.
- fourthark 9y agoMaybe it warns when the problem gets more severe. But the problem described here is when the battery still has as much as 80% capacity. Source: I have 6s+, noticed it was slow recently, after some updates but not right after. Read about this. Got GeekBench and battery test. It tests normal when the battery is full, slower when battery is less full.
- jmull 9y agoJust because it’s interesting to compare: it was worse for me. My 6 Plus (three years old) ran at 600Mhz most of the time according to CPU DasherX, fully charged or not. Normal is 1400Mhz. I replaced the battery this morning and it’s back to the normal level and is quite noticeable in real-world usage doing practically anything. (It wouldn’t surprise me if the GPU or something else in the rendering pipeline was even more affected than the CPU. There were previously long delays in things that just seem to be screen rendering. Those delays aren’t just faster now, but are completely gone.)
- fourthark 9y agoFWIW I replaced my battery (at a reputable place but not Apple). Performance actually got Worse - now scoring less than half the GeekBench norm for this model. Battery life is great, though!
- ap3 9y agoWhere dp you see that?
- jmull 9y agoThere may be cases where it does, but it doesn’t seem to do so in this case — at least not where very many of the affected people can find it. (Myself included. I’ve been noticing for a while that my 6 Plus was running dog slow. Thanks to all this coming out last week I just replaced my battery using a kit from Amazon, and indeed, it now runs well again.)