All of a sudden I cannot use the multifunction switch to make calls. what can I do to rectify this? I can make calls using my phone however

More then likely the problem is the multifunction switch that you use to turn the signal on.

switch off by using removing battery
don"t by power switch

Hi, Sim crash problem can be rectified by your service provider of the network your using for help. Call is free.

Have a nice day.

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hi check this
http://www.orkut.co.in/Main#Community.aspx?cmm=38701415

i hope ur problem will be rectified soon.

all the best

dear,

its a flip mobile thats why this type of mobile causes strip problem..
the strip that connects one portion to the keypad circuitry mostly breakes from its bending area..
so u have to change the strip... 

hope it will help to rectify so dont forget to rate it as it fix your problem

regards,

You can try holding the power and volume down buttons at the same time for up to 2 minutes to see if it will power on. Could be time for a new phone if that doesn't work.

only solution is to take the phone to a nokia authorised service center to fix the problem

call the manager of the dealership and demand answers tell him your unhappy and tell him you will contact chrysler re this problem if its not rectified . ok good luk

the firmware might have got corrupted this might of happened due to virus attack or due to sudden removal of the battery when the phone is on or due to sudden switch off of the phone when the battery charge was low ...

this firmware problem can be solved by giving the restore factory settings(reset) ...
after this your problems will be solved ....

if the same problem persists then you must take your cell to flashing .....(there is a less chance to do this , 99% sure your problem will be solved in the previous step only )

any doubts you can reply me
i am always here to assist you
thank you
bye
rate my solution