MOBILE FAIR-Nokia says Symbian 3 phones due mid-2010

BARCELONA - Nokia's smartphone unit chief Jo Harlow told Reuters in an interview at the Mobile World Congress trade fair in Barcelona:

* To roll out smartphones using new Symbian 3 operating software at end-h1/early summer

* Reasonable to expect other new Symbian phones before that

* Pleased with touch phones portfolio

* Flagship N97 phone has had some software problems

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