Jolla has announced its first smartphone (also called Jolla) powered by the new Sailfish OS. It offers a 4.5-inch “Estrade” display, a dual-core processor, and 4G LTE connectivity. In an effort to help you switch from Android, Jolla has made the device “Android app compliant.”

We’re not completely sure what that means right now. Presumably, it means the Jolla will run Android apps, but it’s not clear how you obtain them, or what the limitations are.

It could be that Jolla has a built-in Android emulator like BlackBerry 10, which means you have to side-load apps manually. But again, we’re still waiting for Jolla to confirm how this will work.

What is confirmed is the Jolla’s 4.5-inch Estrade display, a dual-core CPU, 4G connectivity, 16GB of internal storage, and an 8-megapixel rear-facing camera with autofocus and an LED flash. There’s also a microSD card slot and a user-replaceable battery.

The Jolla is the world’s first smartphone to run the Sailfish OS operating system, which has been derived from MeeGo, the platform that powered Nokia’s N9. It’s a gesture-based platform — again like BlackBerry 10 — that doesn’t appear to use buttons.

The Jolla will initially be available in select European countries later this year, priced at €399 (approx. $510). Those who would like to order the device can do so via Jolla’s website.

• SourceJolla