how to connect airpods without the original case?
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You don't really need the case in itself. The case only serves as a charging device and reset / disconnect service. Your AirPods do need to be charged, and outside the case they do go in usage mode. They'll lose a lot more power and the batteries are fairly small, make sure they have a full battery.
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['Make sure your AirPods are in the case.', 'Open the lid.', 'Press and hold the "pairing" button on the back of the case (pictured above) for several seconds, until it starts blinking white.']
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On your PC, open the Settings app and choose Devices from the main menu. At the top of the Bluetooth & other devices page, click Add Bluetooth or other device. On the Add a device window, click Bluetooth. Put your AirPods in their case and open the lid.
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According to Apple themselves, you do not need the case for airpods to work. The only service the case provides is charging. The case itself has no Bluetooth technology.
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Hold the ‌AirPods‌ case with open lid next to your ‌iPhone‌ or ‌iPad‌. Your iOS device will recognize the ‌AirPods‌ and you'll see a popup to connect your ‌AirPods‌. Tap "Connect." You'll be instructed to press and hold on the back button of the ‌AirPods‌ case.
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Set Up New ‌AirPods‌ on ‌iPhone‌, ‌iPad‌, and ‌iPod touch‌ If your device is already unlocked, navigate to the Home screen. Bring the ‌AirPods‌ case – with the ‌AirPods‌ inside – close to your device and open the case lid. Wait for the setup animation to appear on your device's screen. Tap Connect, then tap Done.
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Put both AirPods in the charging case and open the lid. Press and hold the setup button on the back of the case until the status light flashes white. Select your AirPods in the Devices list, then click Connect.
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['Go to the Bluetooth settings section for your specific device.', 'Choose the option to pair a new device.', 'With the AirPods in the charging case, open the case then press and hold the small setup button on the back of the case until you see the status light flash white.']
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Once you've "forgotten" the AirPods, you need to re-pair them with your phone. To do this, put your AirPods inside their case, wait fifteen seconds, hit the pairing button on the back of the case, then open the lid.
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According to Apple's Support Page and this page on Reddit, the case is not required for use; the AirPods should connect directly to your iPhone or other paired device. ... Your iPhone and AirPods are both well-charged.
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['Pick up your AirPods charging case and open it.', 'Tap on Connect.', 'Press and hold the pairing button on the back of the case.']
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Go to the Bluetooth settings section for your specific device. Choose the option to pair a new device. With the AirPods in the charging case, open the case then press and hold the small setup button on the back of the case until you see the status light flash white.
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['Put your AirPods in their case—keep the lid open.', 'Hold the button on the back, as shown above, for three to five seconds until the amber light blinks three times.', 'Close the lid.', 'On your iPhone, go to Settings > Bluetooth > AirPods and Forget This Device, as shown below.']
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['Open the AirPods case.', 'Press and hold the pairing button on the back of the case.', 'Go to the Apple Menu and click System Preferences.', 'Click Bluetooth.', 'Select AirPods from the list and hit Pair.']
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On your iPhone, first go to Settings, then Bluetooth. Tap the “i” icon that you see next to your AirPods. Hit Forget this Device, then tap to confirm. Put your AirPods in the charging case and close the lid.
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Step 1: Put both of the AirPods Pro earbuds back into the charging case. Step 2: Open the AirPods Pro charging case lid, and pair it with the "iPhone A". Step 3: After connected, take one of the AirPods Pro out of the charging case and keep it at a distance from the charging case.
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To charge your case via wired connection, plug the Lightning cable that came with your AirPods into the Lightning connector on your case. You can use a Lightning to USB-C cable or a Lightning to USB cable. Then plug the other end of the cable into a USB charger or port.