In order to find out how much pre-paid phone credit I have with my carrier, I can dial #123#, which works with my SIM in my iPhone (unlocked) and I get a response giving my available credit. However, when I try to dial this combination of digits with the same SIM in the Lumia 800 (unlocked), I always get the message 'failed'. Can anyone suggest how I might dial #123# on the Lumia? Thanks
Usually service codes are in the format *[number]#
For instance by dialling *100# on my Lumia 800 I will get my calling credit with my carrier.
Hope this helps,
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