#Battery side feature how much battery life remaining upgrade
If your iPhone is older and can't upgrade to iOS 11.3, then you can't check on battery health in Settings. However, you can ask Apple to run a diagnostic test on your battery for you. The iPhone will display this when the battery's capacity is below 80%, and it can significantly affect your phone's ability to work normally. Your battery's health is significantly degraded.You're likely going to see performance issues, like slower loading times. To do so, go to Settings > Face ID & Passcode. Just make sure access to the Control Center is enabled even if the device is in a locked state. The advantage of this method is that you can see the battery status even when your iPhone is locked. This message is an indication your battery is causing issues with your iPhone, and it might soon be time to upgrade. The battery percentage left can now be seen on the upper-right side. Performance management has been applied to help prevent this from happening again.
This iPhone has experienced an unexpected shutdown because the battery was unable to deliver the necessary peak power.This means your battery is beginning to degrade, which may affect performance. As your battery ages, you might see this message. Built-in dynamic software and hardware will help counter performance impacts that may be noticed as your iPhone battery chemically ages.This means that your battery is working normally and has the highest capacity available. Your battery is currently supporting normal peak performance.Here are some common messages you may see when you click through to the Peak Performance Capability section of the Battery menu in Settings. A faster way to check the battery levels on your Beats earphones can be achieved if you have Siri on your iPhone and your Beats are also connected to your iPhone. In the Peak Performance Capability section, you'll see a more detailed explanation of how your battery is doing. To view your edited widget list, go back to the Today view to see the battery levels of all your devices, including the Beats. You can see the health of your iPhone's battery using the Settings app.