AEG Voxtel M300 - Manual (Page 36)

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Fails to
register to
the network 1. The signal is too weak, or there may be some
radio interference around. Check the signal strength
meter on the screen to see whether vertical lines are
displayed.
2. Is the SIM card installed properly? If the SIM card
is damaged, please ask your network operator for
replacement.
Cannot
call out 1. Is the SIM card registered in the network?
2. Is call barring enabled?
3. Calling prohibited due to call charges?
4. Have you enabled the function of FDN?
Cannot
receive calls 1. Is the SIM card registered in the network?
2. Incoming call prohibited due to call charges?
3. Is call divertion enabled?
4. Is the “BAR INCOMING CALL“ function in call
barring enabled?
PIN locked Input the PUK code supplied with the SIM card to
unlock or contact the network operator.
SIM error 1. SIM card is dirty. Clean it.
2. Reinstall the SIM card.
3. SIM card is damaged. Replace it.