Verykool R13 - Manual (Page 9)

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compliance with the above advices or improperly
use the mobile phone.
Note: The application of value-added services of
the mobile phone is provided by relevant service
providers. Please refer to the relevant help or
providers’ notes for detailed information.
Statement: The Company reserves the right to
improve the product without making any
advance notice, and keeps final interpreting
rights on the product performance. The
company commits to improve the product
quality and gradually launches new versions
of products. So if the contents stated in the
manual are slightly different from the function,
specification or design, please refer to the
mobile phone. Such changes are not notified
additionally,
your understanding is
appreciated.
1 Start Using
1.1 Battery
The battery is attached with the mobile phone.
The battery is not charged when the mobile phone
is purchased but can support powering on. Please
recharge it for use after using up the battery for
the first three times, which makes this battery
easier to achieve the best using state.
1.1.1 Uninstallation and installation of
battery
 Put the back of the mobile phone upward, then
take off the rear cover according to the chat
below.