Series_40

Infobox OS | name = Series 40 、 Series 45 | logo = | screenshot = | caption = | developer = 諾基亞 、 威圖 | family = | working_state = 運作中 | source_model = 封閉原始碼 | released = | latest_release_version = | latest_release_date = | latest_preview_version = | latest_preview_date = | frequently_updated = | marketing_target = | language = | prog_language = | updatemodel = | package_manager = | supported_platforms = | kernel_type = | userland = | ui = Nokia OS | license = 專有軟體 | preceded_by = | succeeded_by = | website = Series 40和Series 45是諾基亞和威圖開發的行動作業系統 ， 首次搭載於1999年發佈的諾基亞7110 。