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SIM presence and GSM signal strength
This feature allows you to check that the SIM has been inserted corrected and the GSM
signal strength detected.
A
TH450
B
TH450
C
TH450
CHECK SIM PRESENCE
Activate MANUAL operating mode.
Press button P until the following
indication appears:
= SIM present
= SIM not de-
tected.
The information remains visible
for 5 seconds.
GSM SIGNAL STRENGTH
With the device in MANUAL opera-
tion mode, press the P button until
the following indication appears:
The number indicates the percent-
age of detected GSM signal.
The information is also available
without the SIM card and remains
visible for 5 seconds.
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