Recommendation platform Outbrain has announced a partnership with KaiOS Technologies, developer of the Linux-based KaiOS mobile operating system for keypad feature phones.

Outbrain says it will monetise KaiOS' owned-and-operated and third-party inventory globally across over 100 million feature phones through the partnership.

The Hong Kong-developed operating system has seen fast growth across the region, accessing a new market of low-cost mobile devices, to which Outbrain will now offer new native ad formats across its applications.

Outbrain head of platform Victor Charpin says the partnership will offer its advertisers quality inventory stemming from KaiOS, which is one of the world's top mobile operating systems. "This partnership further cements our commitment to expanding our network, partnering with companies beyond media websites," he says.

With its first devices launched in 2017, the light KaiOS now supports more than 140 million devices worldwide, noted for their mix of capability and affordability.