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  1. Oct 25, 2022 · 1. Press and hold the Alt key. This method will reset your BlackBerry without having to remove the battery. You cannot perform this method if your BlackBerry does not have a keyboard. 2. Press and hold the Right Shift key. Continue to hold the Alt key while you hold the Shift key. 3.

  2. Step 6. Press and hold the "End Call" button to power on the device after 30 minutes, while leaving the device plugged in to the charger. If the battery is chargeable, the device will power on and the battery indicator on the home screen will show the device is charging. If the battery is not chargeable, the device will not power on.

    • Tammy Clevenger
    • how to reset a blackberry 8250 smartphone how to fix iphone battery problems1
    • how to reset a blackberry 8250 smartphone how to fix iphone battery problems2
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  3. Sep 4, 2021 · Here’s how to use the iPhone battery recalibration tool: From the home screen, tap Settings . In the settings menu, scroll down . Tap Battery . Tap Battery Health . Look for Important Battery Message at the top of the display for information about the battery recalibration process on your phone. If you don’t see a message, come back and ...

  4. Apr 27, 2016 · To do this, open the back cover of the phone to expose the battery. Slide the battery out: you may need to get a fingernail underneath one edge of the battery to lever it out. With the battery out, wait for 30 seconds, so that the RAM can discharge and forget its contents. Re-insert the battery, put the cover back on and turn the phone back on.

  5. Mar 6, 2017 · Open Settings > General > About on your iPhone; the Serial Number is listed as the 11th entry on this page. Type this into the field on Apple’s web page and hit Submit to find out if your iPhone ...

    • Lewis Painter
  6. May 31, 2018 · How you perform a hard restart depends on what model iPhone you have: iPhone 6s and earlier: Press and hold down both the Home and Power buttons for around ten seconds. Let go when the Apple logo appears. iPhone 7: Press and hold down both the Power and Volume Down buttons for around ten seconds, until the logo appears.

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  8. May 21, 2024 · For iPhone 6 and later, iOS 11.3 and later add new features to show battery health and recommend if you need to replace the battery. You can find these in Settings > Battery > Battery Health (with iOS 16.1 or later, find these in Settings > Battery > Battery Health & Charging). Additionally, you can see if the performance-management feature ...