Nokia Lumia 640 User Guide 2 - Page 13

Charge your phone, Charge your phone with a USB charger

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Charge your phone Learn how to charge your phone. Charge your phone with a USB charger Your battery has been partially charged at the factory, but you may need to recharge it before you can switch the phone on for the first time. Make sure you use a compatible USB charger to charge your phone. The charger may be sold separately. 1. Plug the charger into a wall outlet. If necessary, connect the USB cable to the charger. 2. Connect the micro-USB end of the charger's cable to your phone. 3. When the battery is full, disconnect the charger from the phone, then from the wall outlet. You don't need to charge the battery for a specific length of time, and you can use the phone while it's charging. If the battery is completely discharged, it may take up to 20 minutes before the charging indicator is displayed. Tip: You can use USB charging when a wall outlet is not available. Data can be transferred while charging the device. The efficiency of USB charging power varies significantly, and it may take a long time for charging to start and the device to start functioning. Make sure your computer is switched on. © 2015 Microsoft Mobile. All rights reserved. 13

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Charge your phone
Learn how to charge your phone.
Charge your phone with a USB charger
Your battery has been partially charged at the factory, but you may need to recharge it before
you can switch the phone on for the first time.
Make sure you use a compatible USB charger to charge your phone. The charger may be sold
separately.
1.
Plug the charger into a wall outlet. If necessary, connect the USB cable to the charger.
2.
Connect the micro-USB end of the charger's cable to your phone.
3.
When the battery is full, disconnect the charger from the phone, then from the wall outlet.
You don't need to charge the battery for a specific length of time, and you can use the phone
while it's charging.
If the battery is completely discharged, it may take up to 20 minutes before the charging
indicator is displayed.
Tip:
You can use USB charging when a wall outlet is not available. Data can be transferred
while charging the device. The efficiency of USB charging power varies significantly, and
it may take a long time for charging to start and the device to start functioning.
Make sure your computer is switched on.
© 2015 Microsoft Mobile. All rights reserved.
13