K&F Concept F8 Instruction Manual page 10

TIPS1: You shall connect to the Internet by mobile phone
En
during installation
TIPS2: You shall open the system push messages
3.Register and log in account number:
Please register your account with your mailbox.
Tips: Reasons for unsuccessful registration:
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The mobile phone network is not turned on, or the APP does not
have the permission to use the network and location.
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Mailboxes with att.net, msn.com, or hotmail.com suffixes may not
receive authentication messages.
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If you can not receive the authentication code, please check
whether you have received it in the junk mailbox.
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