Nokia 9000 Communicator smartphones are not Year 2000 compliant the Finnish telecomm manufacturer has disclosed.
Users must install one freely available software upgrade and also make one manual change to the configuration of their Communicator for it to function properly after the millennium.
Nokia says the short message time stamp will not be shown correctly on the phone display unless a software patch - available free from Nokia repair shops - is installed.
This problem affects only the first generation Nokia 9000 Communicator, not the 9000i, 9000il or the recently launched 9110.
But another problem affecting all Nokia 9000 series Communicators means they will not recognise that 2000 is a leap year, and will skip 29 February, when they are in the sleep mode.
Nokia recommends that the user either changes the date manually on or after 29 February 2000, or leaves the phone connected to its charger all night on 28 February.
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