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Problem
You cannot make
outgoing calls
You cannot answer
incoming calls
Unable to add contacts
to the phone
Echo or noise
Noises during a call
Possible causes
The SIM card is not installed. Install a valid SIM card in
Poor signal.
Your phone is in airplane
mode with no wireless
connectivity.
Poor signal.
Your phone is in airplane
mode with no wireless
connectivity.
Memory for storing
contacts is already full.
Poor network trunk quality
on the part of your service
provider, or poor local
telephone line quality.
You may be near a strong
electromagnetic source
(such as a TV, a microwave
oven, etc.) during a call.
Possible solutions
your phone.
Move to an open space, or if
you are inside a building,
move closer to a window.
1 Touch Start
applications
2 Touch
Settings.
3 Under system, touch
airplane mode.
4 Touch or drag the toggle
switch to turn off the
airplane mode.
Move to an open space, or if
you are inside a building,
move closer to a window.
1 Touch Start
applications
2 Touch
Settings.
3 Under system, touch
airplane mode.
4 Touch or drag the toggle
switch to turn off the
airplane mode.
Delete unnecessary contact
information from the
phone.
Hang up and dial again. You
may be switched to a
better-quality network trunk
or phone line.
Move to another location to
reduce the interference
effects.
Troubleshooting
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