Series 30+ (abbreviated as S30+) is a software platform and application user interface used for Nokia-branded, then HMD-branded mobile devices since 2024. The platform was introduced by Nokia in September 2013, first appearing on the Nokia 108, and has been the main Nokia feature phone operating system after the end of the Series 30 and Series 40 platforms in 2014. Despite the similar name and user interface, the S30+ is technically completely different and unrelated to the S30.
