Zte R620 Manual page 6

After charging is completed, pull the charger out of the outlet.
·When the battery is running low, the mobile phone will show a warning. The
mobile phone will shut down automatically when the battery level is too low.
Please do not let the battery in a position where the level is low for a long time,
or it will damage its quality and life.
·When voltage levels is too high, there will be a precharhge progress. In such
case, it is normal that the phone dose not indicate charging.
·Please use the designated charger to ensure the normal operation of mobile
phone.
·During charging, please do not remove the battery directly .
· Charging should be processed in a ventilated place of 0-40 degree centigrade
temperature.
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