iPhone Duo Troubleshooting Battery, Charging, and Power Issues
Guided steps to help resolve issues
Troubleshooting battery issues
Troubleshooting wired charging issues
Troubleshooting wireless charging issues
Troubleshooting power issues
Identify issues
Read the relevant support articles if you notice any of the following issues:
iPhone won’t turn on
Black or blank screen on all displays
Relevant support articles
If the issue wasn’t resolved by following a support article, continue to the next section.
Try quick troubleshooting steps
iPhone Duo is compatible with wireless charging and MagSafe charging. Attaching a wireless charger turns on iPhone if it’s off. You can attach a wireless charger to help confirm whether the iPhone turns on or not. This is helpful when the charging connector might be damaged.
Clean the iPhone. Check the iPhone charging connector for debris. Gently clean the connector using a small, non-metallic, soft-bristled brush. Ensure that the brush is clean and dry. Use just enough bristles to fit inside the connector. Twist the bristles to loosen and lift out debris. Brush debris away from the connector to avoid brushing debris into the connector.
Important: Unplug all cables and turn off the iPhone first. Don’t use products containing bleach or hydrogen peroxide. Avoid getting moisture in any openings and don’t submerge the iPhone in any cleaning agents. Don’t use compressed air.
Ensure that you’re using a recommended power adapter to charge the iPhone. Some power adapters may not provide enough power to charge the iPhone.
Use a compatible charge cable to connect the iPhone to a power adapter that’s plugged into an electrical outlet. Don’t use a computer port or wireless charging. Charge the iPhone for at least 10 minutes. Wait until an image appears on the screen or 10 minutes have elapsed.
Note: The iPhone may have entered a deep discharge state that requires 20 to 30 minutes of charging to turn on. The charging icon should be visible after 2 minutes of charging.
Gently move the cable around at the connection to ensure that there is no intermittent connection. If the connection appears to be intermittent using a functioning charge cable, the iPhone charging connector may be faulty or damaged.
Flip the charge cable orientation.
Unplug the charge cable and plug it back in.
Try a different charge cable.
Try a different USB-C power adapter.
Use a compatible wireless charging pad that’s plugged into an electrical outlet.
Disconnect the wired charge cable before you test wireless charging. When both are used simultaneously, charging defaults to the wired connection. Place the iPhone directly on top of the charging pad. Ensure that the iPhone display is faceup in the middle of the charger or in the location recommended by the wireless charging pad manufacturer.
Wait until an image appears on the screen or 10 minutes have elapsed. If the iPhone doesn’t turn on when using wired charging and turns on only when using wireless charging, then the iPhone may have wired charging issues.
Run manual and diagnostic tests
If the issue wasn’t resolved by following a support article or trying the quick troubleshooting steps, run these diagnostic and manual tests to help isolate the cause of the issue:
Follow all steps in If your iPhone won’t turn on or the screen is black to attempt to place the device in recovery mode. If an image appears on one of the displays in recovery mode, connect the device using a functioning cable to a computer running the latest version of macOS. If the device is recognized by the computer, then the device has power. Restore the device if prompted.
Follow repair manual procedures to open the device and disconnect the battery. Use a compatible charge cable to connect the iPhone to a power adapter that’s plugged into an electrical outlet. Don’t use a computer port or wireless charging. Attempt to turn on the iPhone with the battery disconnected. If the Apple logo appears on the iPhone screen with the battery disconnected, then battery replacement is recommended. If the iPhone remains off and unresponsive, then the issue is likely unrelated to the battery.
Attempt to restart the iPhone into Diagnostics Mode. If the device cannot restart into Diagnostics Mode, or is exhibiting No Power On symptoms, follow steps in Restore your iPhone or iPad with a nearby device or Restore your iPhone, iPad, or iPod to factory settings using a computer to attempt to revive or restore the device before replacing any parts.
Open and inspect the iPhone
If the issue wasn’t resolved or isolated by following support articles or running diagnostic tests, refer to the iPhone repair manual to open and inspect the iPhone. A damaged or out-of-place part may be causing one of the issues.
Follow repair manual procedures to open the device.
Disconnect the flex cables connecting the batteries to the logic board.
Examine the connectors for signs of damage or debris.
If the connectors appear normal and not damaged, reconnect the flex cables.
Reassemble by installing any removed parts and closing the device.
Retest the device for power and battery using a wired charger, then a wireless charger, to isolate a potential charging issue from a power issue.
Note: This section requires ordering parts and tools. Replacing a part may not resolve the device’s issue. You can find other service options at support.apple.com/repair.
Replace the part
If the issue wasn’t resolved or isolated by following the previous steps, replace the logic board or I/O board, depending on the diagnostic results.
After the repair is completed, turn on the device and verify that the device turns on and completes startup. Also test wired and wireless charging functionality.
Note: This section requires ordering parts and tools. Replacing a part may not resolve the device’s issue. You can find other service options at support.apple.com/repair.
Troubleshooting battery issues
Identify issues
Read the relevant support articles if you notice any of the following issues:
Battery runs out of power quickly
Battery doesn’t hold a charge
iPhone turns off immediately after disconnecting it from a power adapter
Battery won’t charge or charges slowly, or an alert related to battery usage appears
Relevant support articles
If a Charging On Hold notification appears on your iPhone or iPad
Using Apple power adapters, cables, and duckheads with Apple products
If the issue wasn’t resolved by following a support article, continue to the next section.
Try quick troubleshooting steps
iPhone Duo is compatible with wireless charging and MagSafe charging. Attaching a wireless charger turns on iPhone if it’s off. You can attach a wireless charger to help confirm whether the iPhone turns on or not. This is helpful when the charging connector might be damaged.
Clean the iPhone. Check the iPhone charging connector for debris. Gently clean the connector using a small, non-metallic, soft-bristled brush. Ensure that the brush is clean and dry. Use just enough bristles to fit inside the connector. Twist the bristles to loosen and lift out debris. Brush debris away from the connector to avoid brushing debris into the connector.
Important: Unplug all cables and turn off the iPhone first. Don’t use products containing bleach or hydrogen peroxide. Avoid getting moisture in any openings and don’t submerge the iPhone in any cleaning agents. Don’t use compressed air.
Ensure that you’re using a recommended power adapter to charge the iPhone. Some power adapters may not provide enough power to charge the iPhone.
Use a compatible charge cable to connect the iPhone to a power adapter that’s plugged into an electrical outlet. Don’t use a computer port or wireless charging. Charge the iPhone for at least 10 minutes. Wait until an image appears on the screen or 10 minutes has elapsed.
Note: The iPhone may have entered a deep discharge state that requires 20 to 30 minutes of charging to turn on. The charging icon should be visible after 2 minutes of charging.
Gently move the cable around at the connection to ensure that there is no intermittent connection. If the connection appears to be intermittent using a functioning charge cable, the iPhone charging connector may be faulty or damaged.
Flip the charge cable orientation.
Unplug the charge cable and plug it back in.
Try a different charge cable.
Try a different USB-C power adapter.
Use a compatible wireless charging pad that’s plugged into an electrical outlet.
Disconnect the wired charge cable before you test wireless charging. When both are used simultaneously, charging defaults to the wired connection. Place the iPhone directly on top of the charging pad. Ensure that the iPhone display is faceup in the middle of the charger or in the location recommended by the wireless charging pad manufacturer.
Wait until an image appears on the screen or 10 minutes has elapsed. If the iPhone doesn’t turn on when using wired charging and turns on only when using wireless charging, then the iPhone may have wired charging issues.
If the battery drains too quickly, check that an app isn't causing the issue. Go to Settings > Battery to review battery usage by app. You can view more information by going to Settings > Battery > Battery Health. For details about unexpected shutdowns, performance management, and battery health, refer to iPhone battery and performance.
Run manual and diagnostic tests
If the issue wasn’t resolved by following a support article or trying the quick troubleshooting steps, run these diagnostic and manual tests to help isolate the cause of the issue:
Important: Devices with a nongenuine or unknown battery may exhibit the following symptoms:
False failures with MagSafe or wireless charging
MagSafe isn’t detected
Unexpected shutdowns
Charging issues where the device doesn’t charge above 1 percent
If any or all of the symptoms above are present, check MRI results. If MRI results show an unknown battery flag with MagSafe failures such as MagSafe not being detected, or charging issues where the device doesn’t charge above 1 percent, battery replacement is recommended. If replacing the battery doesn’t resolve these issues, continue troubleshooting. If the issue is unrelated to these symptoms, continue troubleshooting.
Note: Battery and charge indicators may fluctuate briefly when you connect the iPhone to power or wake it from sleep. If this happens, wait a few seconds. Then check it again. The battery percentage may remain at 99 percent with a full charge, which doesn’t indicate a battery or hardware issue. Refer to iPhone battery and performance for more information.
Open and inspect the iPhone
If the issue wasn’t resolved or isolated by following support articles or running diagnostic tests, refer to the iPhone repair manual to open and inspect the iPhone. A damaged or out-of-place part may be causing one of the issues.
Follow repair manual procedures to open the device.
Disconnect the flex cables connecting the batteries to the logic board.
Examine all connectors for signs of damage or debris.
If all connectors appear normal and not damaged, reconnect the flex cables.
Reassemble by installing any removed parts and closing the device.
Retest the device for power and battery.
Note: This section requires ordering parts and tools. Replacing a part may not resolve the device’s issue. You can find other service options at support.apple.com/repair.
Replace the part
If the issue wasn’t resolved or isolated by following the previous steps, replace the left and right batteries.
After the repair is completed, turn on the device and verify wired and wireless charging functionality.
Note: This section requires ordering parts and tools. Replacing a part may not resolve the device’s issue. You can find other service options at support.apple.com/repair.
Troubleshooting wired charging issues
Identify issues
Read the relevant support articles if you notice any of the following issues:
iPhone doesn’t charge with a wired connection but does charge wirelessly
iPhone doesn’t charge from a power adapter
iPhone charges slowly from a power adapter
Battery charge icon doesn’t show that the iPhone is fully charged
iPhone turns off immediately after disconnecting it from a power adapter
Battery won’t charge or charges slowly, or an alert related to battery usage appears
Relevant support articles
If a Charging On Hold notification appears on your iPhone or iPad
Using Apple power adapters, cables, and duckheads with Apple products
If the issue wasn’t resolved by following a support article, continue to the next section.
Try quick troubleshooting steps
iPhone Duo is compatible with wireless charging and MagSafe charging. Attaching a wireless charger turns on iPhone if it’s off. You can attach a wireless charger to help confirm whether the iPhone turns on or not. This is helpful when the charging connector might be damaged.
Clean the iPhone. Check the iPhone charging connector for debris. Gently clean the connector using a small, non-metallic, soft-bristled brush. Ensure that the brush is clean and dry. Use just enough bristles to fit inside the connector. Twist the bristles to loosen and lift out debris. Brush debris away from the connector to avoid brushing debris into the connector.
Important: Unplug all cables and turn off the iPhone first. Don’t use products containing bleach or hydrogen peroxide. Avoid getting moisture in any openings and don’t submerge the iPhone in any cleaning agents. Don’t use compressed air.
Ensure that you’re using a recommended power adapter to charge the iPhone. Some power adapters may not provide enough power to charge the iPhone.
Use a compatible charge cable to connect the iPhone to a power adapter that’s plugged into an electrical outlet. Don’t use a computer port or wireless charging. Charge the iPhone for at least 10 minutes. Wait until an image appears on the screen or 10 minutes has elapsed.
Note: The iPhone may have entered a deep discharge state that requires 20 to 30 minutes of charging to turn on. The charging icon should be visible after 2 minutes of charging.
Gently move the cable around at the connection to ensure that there is no intermittent connection. If the connection appears to be intermittent using a functioning charge cable, the iPhone charging connector may be faulty or damaged.
Flip the charge cable orientation.
Unplug the charge cable and plug it back in.
Try a different charge cable.
Try a different USB-C power adapter.
Use a compatible wireless charging pad that’s plugged into an electrical outlet.
Disconnect the wired charge cable before you test wireless charging. When both are used simultaneously, charging defaults to the wired connection. Place the iPhone directly on top of the charging pad. Ensure that the iPhone display is faceup in the middle of the charger or in the location recommended by the wireless charging pad manufacturer.
Wait until an image appears on the screen or 10 minutes has elapsed. If the iPhone doesn’t turn on when using wired charging and turns on only when using wireless charging, then the iPhone may have wired charging issues.
Run manual and diagnostic tests
If the issue wasn’t resolved by following a support article or trying the quick troubleshooting steps, run these diagnostic and manual tests to help isolate the cause of the issue:
Note: Battery and charge indicators may fluctuate briefly when you connect the iPhone to power or wake it from sleep. If this happens, wait a few seconds. Then check it again. The battery percentage may remain at 99 percent with a full charge, which doesn’t indicate a battery or hardware issue. Refer to iPhone battery and performance for more information.
Open and inspect the iPhone
If the issue wasn’t resolved or isolated by following support articles or running diagnostic tests, refer to the iPhone repair manual to open and inspect the iPhone. A damaged or out-of-place part may be causing one of the issues.
Follow repair manual procedures to open the device.
Disconnect the flex cables connecting the batteries to the logic board.
Disconnect the USB-C charging port flex cable from the logic board.
Examine these connectors for signs of damage or debris.
If these connectors appear normal and not damaged, reconnect them.
Reassemble by installing any removed parts and closing the device.
Retest the device for wired charging.
Note: This section requires ordering parts and tools. Replacing a part may not resolve the device’s issue. You can find other service options at support.apple.com/repair.
Replace the part
If the issue wasn’t resolved or isolated by following the previous steps, replace the USB-C charging port flex cable.
After the repair is completed, turn on the device and verify wired charging functionality.
Note: This section requires ordering parts and tools. Replacing a part may not resolve the device’s issue. You can find other service options at support.apple.com/repair.
Troubleshooting wireless charging issues
Identify issues
Read the relevant support articles if you notice any of the following issues:
iPhone doesn’t charge wirelessly but does charge with a wired connection
iPhone doesn’t identify MagSafe accessories
iPhone charges slowly
Relevant support articles
If a Charging On Hold notification appears on your iPhone or iPad
Using Apple power adapters, cables, and duckheads with Apple products
If the issue wasn’t resolved by following a support article, continue to the next section.
Try quick troubleshooting steps
iPhone Duo is compatible with wireless charging and MagSafe charging. Attaching a wireless charger turns on iPhone if it’s off. You can attach a wireless charger to help confirm whether the iPhone turns on or not. This is helpful when the charging connector might be damaged.
Use a compatible wireless charging pad that’s plugged into an electrical outlet.
For MagSafe accessory detection issues, ensure that the wireless charger is an Apple MagSafe Charger.
Remove any case that may interfere with testing the iPhone.
Ensure that you’re using a recommended power adapter to charge the iPhone. Some power adapters may not provide enough power to charge the iPhone.
Run manual and diagnostic tests
If the issue wasn’t resolved by following a support article or trying the quick troubleshooting steps, run these diagnostic and manual tests to help isolate the cause of the issue:
Important: Devices with a nongenuine or unknown battery may exhibit the following symptoms:
False failures with MagSafe or wireless charging
MagSafe isn’t detected
Unexpected shutdowns
Charging issues where the device doesn’t charge above 1 percent
If any or all of the symptoms above are present, check MRI results. If MRI results show an unknown battery flag with MagSafe failures such as MagSafe not being detected, or charging issues where the device doesn’t charge above 1 percent, battery replacement is recommended. If replacing the battery doesn’t resolve these issues, continue troubleshooting. If the issue is unrelated to these symptoms, continue troubleshooting.
Use a MagSafe Charger or a Qi-certified wireless charging accessory that’s plugged into an electrical outlet.
Disconnect the wired charge cable before you test wireless charging. When both are used simultaneously, charging defaults to the wired connection. Place the iPhone directly on top of the charging pad. Ensure that the iPhone display is faceup in the middle of the charger or in the location recommended by the wireless charging pad manufacturer.
Wait until an image appears on the screen or 10 minutes have elapsed. If the iPhone doesn’t turn on with wireless charging and turns on only with wired charging, then the iPhone may have wireless charging issues.
Note: Battery and charge indicators may fluctuate briefly when you connect the iPhone to power or wake it from sleep. If this happens, wait a few seconds. Then check it again. The battery percentage may remain at 99 percent with a full charge, which doesn’t indicate a battery or hardware issue. Refer to iPhone battery and performance for more information.
Open and inspect the iPhone
If the issue wasn’t resolved or isolated by following support articles or running diagnostic tests, refer to the iPhone repair manual to open and inspect the iPhone. A damaged or out-of-place part may be causing one of the issues.
Follow repair manual procedures to open the device.
Disconnect the flex cable connecting the wireless charging coil to the logic board.
Examine this connector for signs of damage or debris.
If this connector appears normal and not damaged, reconnect it.
Reassemble by installing any removed parts and closing the device.
Retest the device for wireless charging.
Note: This section requires ordering parts and tools. Replacing a part may not resolve the device’s issue. You can find other service options at support.apple.com/repair.
Replace the part
If the issue wasn’t resolved or isolated by following the previous steps, replace the following parts one at a time in the order shown. After you replace the first part, repeat the troubleshooting steps to determine whether replacing a part resolves the issue. If it still isn’t resolved, replace the next part.
If the device charges with a wired connection but doesn’t charge wirelessly, replace the back glass, which contains the wireless charging coil.
If the device doesn’t charge with a wired connection and doesn't charge wirelessly, replace the logic board or the I/O board, depending on the diagnostic results.
After the repair is completed, turn on the device and verify wireless charging functionality.
Note: This section requires ordering parts and tools. Replacing a part may not resolve the device’s issue. You can find other service options at support.apple.com/repair.