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The Nokia C3-00 is an s40 qwerty phone, while the Nokia C3-01 is a touch and type s40 phone with a standard alphanumeric keypad.
Anyway, for s40 phones, Ovi maps is only available preinstalled. So if you got your unit with no Ovi maps installed from the factory, there is no possibility for you to install it. Your only alternative is to use other mapping apps if there are any available for s40. I think Google Maps is but I am not sure.
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