![]() ![]() Charging may pause temporarily while in extreme temperature conditions, and will resume once the battery’s temperature returns to its normal operating range.Apple Watch Ultra can further reduce time spent at high states of charge by learning when to charge to an Optimized Charge Limit and when to allow for a full charge. Based on your daily charging routine, it may automatically defer charging to 100% until shortly before you need to use the battery. Optimized Battery Charging is available on all platforms as of iOS 13, watchOS 7, and macOS Big Sur. Optimized Battery Charging and Optimized Charge Limit adapt to your daily usage and preserve your battery lifespan over time.To reduce battery aging, built-in software and hardware systems are included to manage charging patterns and battery temperature. For more power-efficient communication between the devices, keep Bluetooth enabled on iPhone. Disabling Bluetooth on your iPhone increases the battery drain on your Apple Watch.When you want to turn on the display, just tap it or press the Digital Crown. Open Settings on Apple Watch, select General, select Wake Screen, and turn Wake Screen on Wrist Raise off. If you’re very active with your hands and your watch display turns on more than you think it should, you can prevent the display from turning on every time you raise your wrist.To pair the Bluetooth chest strap with your watch, make sure the strap is in pairing mode, then open Settings on Apple Watch, select Bluetooth, and choose from the list of Health Devices. For longer workouts, you can choose to use a Bluetooth chest strap instead of the built-in heart rate sensor.Note that when the heart rate sensor is off, calorie burn calculations may not be as accurate. To do this, open the Apple Watch app on iPhone, go to My Watch > Workout, and turn on Power Saving Mode. During running and walking workouts, turn on Power Saving Mode to disable the heart rate sensor. ![]() You can also contact Apple Support.There are a few ways you can preserve battery life on your Apple Watch: If your device still won't power on or charge, take your device, charging cable, and charging adapter to an Apple Store or Apple Authorized Service Provider for evaluation.Let your device charge for another half hour.iPhone 6s or earlier, iPhone SE (1st generation), and iPod touch (6th generation) or earlier: Press and hold both the side (or top) button and the Home button until the Apple logo appears.iPhone 7, iPhone 7 Plus, and iPod touch (7th generation): Press and hold both the side (or top) button and the volume down button until the Apple logo appears.Press and hold the side button until the Apple logo appears. Press and quickly release the volume down button. iPhone 8 or later and iPhone SE (2nd generation): Press and quickly release the volume up button.If your device is still unresponsive, force restart your device:.Let your device charge for a half hour.Remove any debris from the charging port on the bottom of your device, then firmly plug your charging cable into your device. If the charging port is damaged, your device probably needs service.Use a wall power outlet and check for firm connections between your charging cable, USB wall adapter, and wall outlet or AC power cable, or try a different outlet.Check your charging cable and USB adapter for signs of damage, like breakage or bent prongs. Don't use damaged accessories.Follow these steps and try again after each: ![]()
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