Sony Mobile has updated the Lifelog application to build number 2.9.A.0.22, which adds support for the SmartBand 2 SWR12. The other main change for this new version is that you can now log physical activities whilst in battery Stamina mode (only applies to Xperia devices).
DOWNLOAD APK: Lifelog (2.9.A.0.22)
Thanks Rimaz!