Optimus-branded devices have been produced running both the Android and Windows Phone 7 operating systems.
Due to network differences between carriers, LG created a sub-series with carrier-specific variants based on the Optimus One.
[citation needed]Additionally, some hardware variants add minor new features: LG Optimus L is an Android sub-series launched in 2012.
It consists of the following: And until fourth series, LG has started a new L product line.
[1] It includes the following: The Optimus G sub-series was introduced for LG's high-end devices in 2012.