Grupo Sefton Tecnology SEFTONS400 用户手册
26
The temperature of charging
environment is below -10°C or
above 55°C.
Change the charging environment.
Bad contact
Check the connection of the connector.
New entries can
not be added to the
phonebook.
The phonebook is full.
Delete some entries of the phonebook.
Some functions
can not be set.
The network service provider
does not provide this service or you
do not apply for this service.
Contact your network service provider.