Siemens M55 User Manual page 55

54
Problem
No network connec-
tion.
Phone loses net-
work.
Calls not possible.
Certain uses of
phone not possible.
Impossible to make
entries in Phone-
book.
Voice mail not func-
tioning.
SMS (text mes-
T
sage) flashing.
Function cannot be
set.
Capacity problems
with, for example,
Games & More,
ringtones, pictures,
SMS archive.
No WAP access,
downloading not
possible.
Questions & Answers
Possible causes
Weak signal.
Outside GSM range.
Invalid SIM card.
New network not authorised. Try manual selection or select a different network
Network barred.
Network overloaded.
Signal too weak.
Second line set.
New SIM card inserted.
Charge limit reached.
Credit used up.
Call restrictions are in place. Barrings can be set by service provider. Check bar-
Phonebook is full.
Call divert to mailbox not set. Set call divert to mailbox (p. 39).
SMS memory is full.
Not supported by service
provider or registration re-
quired.
Handset memory full.
Profile not activated, profile
settings wrong/incomplete.
Possible solution
Move higher, to a window or an open space.
Check service provider's coverage area.
Complain to the service provider.
(p. 42).
Check network barrings (p. 42).
Try again later.
Reconnection to another service provider is automatic
(p. 42). Switching phone off and on again can speed
this up.
'
Set first line (p. 42).
Check for new barrings.
Reset limit with PIN2 (p. 27).
Load credit.
rings (p. 42).
Delete entries in Phonebook or transfer to Address-
book (p. 23).
To free up capacity, delete (p. 30) or file messages
(SMS).
Contact your service provider.
Delete files in the relevant areas.
Activate (p. 33), set WAP profile (p. 34) or set HTTP
profile. If necessary ask your service provider.