Zte V72A User Manual page 141

Problem
Echo or
noise
Possible causes
The network is busy at
the current time (for
example, during peak
times, there may be too
much network traffic to
handle additional calls).
You are too far away
from a base station for
your service provider.
Poor network link quality
on the part of your
service provider.
Possible solution
Avoid using the tablet at
such times, or try again
after waiting a short
time.
You can request a
service area map from
your service provider.
End the call and dial
again. You may be
switched to a
better-quality network
link or tablet line.
141