urgent help needed

[Swithin Donelly]

hi there
i have a nokia 6200
my problem is i bought the phone but it was on a gsm 850 network
the phone is a triband phone . it switches bands automatically, but for some reason it is not switching to the 1800 band
is there any way i can switch it myself. i am having series problems with getting a good signal
thank u for ur help

[toyotachaser]

this one site says there are more than one locks.....
here


All Nokia phones (2110 and newer) have four different SIM locks which can be used to lock the
phone for upto 4 different providers. But most phones with restriction only have one lock
activated. ( lock 1)

The main code used in Nokia phones is:
#pw+(master code)+Y#
This code is able to check, activate or remove Sim card restriction (SP-lock).
Use the * key to get the p, + and w chars.
'Y' has to be 1,2,3 or 4 - depending of what lock you what to deal with.

#pw+1234567890+1# for Provider-Lock status
#pw+1234567890+2# for Network-Lock status
#pw+1234567890+3# for Country-Lock status
#pw+1234567890+4# for SimCard-Lock status


maybe the network lock is activated... i dont know..... someone with more knowledge about unlocking might be able to tell if this is the case.

i wanna know if this is the case because i have just unlocked my 6200 and was hoping to use a prepaid sim in the philippines as i travel there sometimes to visit my relatives. hopefully my phone switches to correct band not having the same problem as your phone. Maybe unlocking your phone can help if it isnt already unlocked?????