u40 – User’s Guide
51
Failed to
charge the
battery
The battery or the
charger is damaged.
Change a new
battery or charger.
Charge the battery
when ambient
temperature is lower
than -10
℃
or above
55
℃
.
Change the
environment.
Poor connection.
Check whether the
plug is properly
connected.
Failed to add
contacts to
phonebook
The storage space of
phonebook is used up.
Delete some
contacts from the
phonebook.
Failed to set
up some
features
Your network service
provider does not
provide the services, or
you haven’t subscribed
them.
Contact your
network service
provider.
Startup Fails
Recovery Mode - You
have held Power
Volume UP
Button at the same
time.
1- Press menu
button and then
press HOME button.
OR:
2- Remove the
battery and put it
back.