Panasonic Lumix DC-S1 Owner's Manual page 409

During recording, these have priority, so it will take time until sending is
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complete.
If the camera is turned off, or the Wi-Fi is disconnected before sending is
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completed, then sending will not restart.
You may not be able to delete files or use the [Playback] menu while sending.
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If image sending fails, a report email outlining the failure will be sent to the
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email address registered in the "LUMIX CLUB".
Panasonic assumes no responsibility for any damages resulting from the
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leakage, loss, etc. of images uploaded on web services.
When uploading images to a web service, do not delete images from the
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camera, even after they have finished sending, until you have checked that
they have been properly uploaded to the web service.
Panasonic assumes no responsibility for any damages resulting from the
deletion of images stored on the camera.
Images uploaded to web services cannot be displayed or deleted with the
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camera.
Images may contain information that can be used to identify the user, such as
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recording dates and times, and location information. Check carefully when
uploading the images to a web service.
When [Auto Transfer] in [Bluetooth] is set to [ON], [Wi-Fi Function] is not
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available.
15. Wi-Fi/Bluetooth
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