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    • Check the mode of your SmartBand and make sure that it is in night mode.

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      To check which mode your SmartBand is in

      • Briefly press the power key. The notification lights switch between one lit and two lit lights when your SmartBand is in night mode, and when it is in day mode, the notification lights illuminate one by one, then all lights go out.

    • Switch your SmartBand to night mode if it is in day mode.

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      To switch between day mode and night mode

      • Press and hold down the power key for two seconds.

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    On your Xperia™ device, go to Settings > About phone/tablet > Model number
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    On your Xperia™ device, go to Settings > About phone/tablet > Model number