Troubleshooting – Siemens GSM 900 User Manual
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Troubleshooting
Problem
Possible causes
Possible solutions
No connection to
network.
Signal weak.
Move to a higher elevation, to a window or open space.
Outside range.
Check service provider coverage map.
Fixed mode.
Switch mode to automatic (p. 80).
SIM card not valid.
Reclaim at the service provider.
New network not authorized. Try manual selection or select a different
Network barring is set.
Check barrings (p. 80).
Network overloaded.
Try again later.
Phone loses
network.
Signal too weak.
Reconnection to another service provider is automatic
(p. 79). Switching the phone off and on again may
speed this up.
Communication
difficult in car with
hands-free function.
Ambient noise level too high. Use Car Kit (Car Solutions, p. 97).
Calls not possible. Dialing error.
New network not authorized (p. 79).
New SIM card inserted.
Check for new restrictions.
Charge limit reached.
Reset A/c limit with PIN 2 (p. 52).
Credit used up.
Load credit.
Certain uses of the
phone not possible.
Call restrictions are set.
Barrings may have been set by your service provider.
(See p. 80.)
The phone number has more
than 20 digits.
Check phone number.
Entries cannot be
made to
Addressbook/
Phone book.
Addressbook/Phone book
is full.
Delete Addressbook/Phone book entries (p. 27).
Voice mail
does not work.
Call forward to the mailbox is
not set.
Set call forward to the mailbox (p. 53).
SMS (text
message)
Š
flashes.
SMS memory full.
Delete messages (SMS) to free memory space (p. 35).
Function cannot
be set.
Not supported by service
provider or registration
is required.
Contact your service provider.