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Taking off the other half gives you a peek at the battery, which is 2100mAh and removeable. Jolla estimates it gives nine or ten hours of talk time.
The camera is distinctly average, and struggles in low light.
However, no-one's going to buy a Jolla for its uninspiring camera — the device's chief appeal is likely to be its operating system, Sailfish, which was developed by Jolla using the MeeGo OS abandoned by Nokia in 2011.
There are a couple of major differences between Sailfish and most other well-known smartphones OSes. There are very few taps required in Sailfish, for one, which has both its benefits and drawbacks.
In the lock screen, for example, there are icons in the top left hand side displaying notifications like missed calls or emails received. However, none of them are clickable – if you want to find out who sent you that missed calls, you'll have to thumb your way to another screen.