Apple promises fix for iPhone 6s, 6s Plus not displaying accurate battery data
In a new support document, Apple has acknowledged a problem in which an iPhone 6s or 6s Plus may not show the right battery percentage as power drains.
Apple is "investigating the cause and a solution," according to the document. The bug is specifically said to manifest when changing time manually, or else shifting timezones while traveling.
As a temporary workaround, the company suggests first rebooting an iPhone, and then making sure date and time are set automatically by going into the General menu in iOS 9's Settings app. If the problem manifests again without changing time or timezones, people are asked to contact Apple's support staff.
iPhone owners have complained about the issue since last September, at which point the company was also promising fixes to individuals. It's not clear why the company has had trouble with a solution, or why it took several months to make a public diagnosis.
Apple is "investigating the cause and a solution," according to the document. The bug is specifically said to manifest when changing time manually, or else shifting timezones while traveling.
As a temporary workaround, the company suggests first rebooting an iPhone, and then making sure date and time are set automatically by going into the General menu in iOS 9's Settings app. If the problem manifests again without changing time or timezones, people are asked to contact Apple's support staff.
iPhone owners have complained about the issue since last September, at which point the company was also promising fixes to individuals. It's not clear why the company has had trouble with a solution, or why it took several months to make a public diagnosis.
Comments
I think it means those phones have a different bit of source code for displaying battery power than other models.
1. The clock gains about a minute a month no matter how I have the "Set Automatically" toggled in Settings.
2. When charged to 100% the indicator takes far longer to reach 60% than for it to go from 60% to 10%. Sometimes it will stay at 100% for about an hour with the screen on playing a video or web browsing. Once the indicator hits around 60% it starts to drop more rapidly.
Both are quite minor oddities, but they are something I noticed. I've never installed or played Candy Crush or any King game on it.
I'm not complaining but I wonder if anyone else here has experienced anything similar.
Power management is typically handled by a dedicated microcontroller/power management chip. The chip(s) for this in the 6S are different than those in the 6. Based on the part numbers from iFixit teardowns the 6S uses newer versions.
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
I'm kinda shocked this article was just posted, and it's an odd coincidence. Perhaps this issue is common among the iPhone 6 also?
Same with going near zero, if you look at the battery university web site, it is in fact worse to let it discharge low than go high.
The Ideal is charge when it reaches 30-40% let it charge to 100% (never use for any CPU intensive activity it when it's plugged in at 100%, unplug it is better).
Slow charge better for battery than quick charge (because again heat is very bad for battery); though quick charge is not as bad when battery is between 25-75% as when it's close to 100%.