User Manual

Troubleshooting
152
Symptom Diagnosis Solution
Is the phone connected to
an AP and registered with
the service network when
in Only WiFi mode?
Ensure the phone’s
WiFi settings are
correct when in
Only WiFi mode.
Is the phone outside of
the AP’s range or is there
sufficient WLAN signal
strength when in Only
WiFi mode?
Move closer to the
AP for better signal
strength when in
Only WiFi mode.
Have you pressed
to make a WiFi call when
in Dual Attach mode?
Press to
make a WiFi call
when in Dual
Attach mode.
Is the keypad locked? Unlock the keypad.
Is the phone number
correct?
Enter the correct
number to make
the call.
Is the ring mode of the
current profile set to
Vibration or Mute?
Select different ring
mode or different
profile.
No ring
Have you activated the
Silent profiles by pressing
and holding in
standby state?
In standby state,
press and hold
again.
Strong
interference noise
during call; or call
Is there an obstacle
nearby that is preventing
signals from passing?
Move to another
area.