Huawei M635 User Guide - Page 35

obtaining authorization from your service, unavailable or - problem

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The signal strength is not strong enough or your phone is often off line. • The antenna is in a good condition. • Move close to a place with strong signal strength. Your phone displays "No service found", "Service unavailable" or "Network problem". • You are in an area with very weak signal or outside your service provider's network coverage (in a tunnel or surrounded by buildings). If so, move to another area and try again. • Do not utilize the service option without obtaining authorization from your service provider. 33

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33
The signal
strength is not
strong enough or
your phone is
often off line.
•
The antenna is in a good condition.
•
Move close to a place with strong signal
strength.
Your phone
displays "No
service found",
"Service
unavailable" or
"Network
problem".
•
You are in an area with very weak signal or
outside your service provider's network
coverage (in a tunnel or surrounded by
buildings). If so, move to another area and
try again.
•
Do not utilize the service option without
obtaining authorization from your service
provider.