Symbian OS is officially the property of Nokia. It means that any other company will have to take permission from Nokia before using this operating system. Nokia has remained a giant in low-end mobile market, so after Java symbian was the most used in the mobile phones till a couple of years ago. Still Symbian is widely used in low-end phones but the demand rate has ben continuously decreasing. By upgrading Symbian mobile OS, Nokia has made it capable to run smartphones efficiently. Symbian ANNA and BELLE are the two latest updates which are currently used in Nokia’s smartphones. Overall, the Symbian OS is excellently designed and is very user-friendly.
Unfortunately, Symbian OS graph is going downwards nowadays due to the immense popularity of Android and iOS.
Some of the phones currently running on Symbian OS are Nokia C6-01, Nokia 603, Nokia 700, Nokia 808 Pure View, Nokia E6 (ANNA) and Nokia 701 (BELLE). Symbian is a popular choice among nokia dual sim mobile phones as well.