Series 30+
Series 30+ (abbreviated as S30+) is a software platform and application user interface used for Nokia-branded mobile devices. 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, S30+ is technically completely different and unrelated to S30. Many S30+ devices only support MAUI Runtime Environment (MRE), developed by MediaTek, but some later devices have included support for  J2ME applications. Even for models that don't support Java J2ME applications, some are still capable of running something. Some S30+ models also come with an online shop that would allow downloading new apps and games. List of devices. The following feature phones use the Series 30+ platform and are all available as both single and Dual SIM models. Multimedia support. Maximum accepted video resolution is 854×480.