Quote:
Originally Posted by brudigia
The key word was probably, as you have remarked, "when the device goes to sleep". I have a Kobo sleep cover and I have done some tests. I have left the WiFi on on the H2O, and when I re-opened my ebook, (with the sleep cover) it actually told me that I had been reading on another device and if I wanted to go to the latest page.
So the synch is not immediate with the H2O, whereas it is quite immediate with the iOS apps.
I see a small problem of logic. If the H2O has the wifi not on, and it still needs to synch right after it wakes up, will it still synch if I turn on the wifi after it has woken up ? Or do I have to turn on wifi again, close the cover, maybe wait a bit, and then reopen the ebook again ?
Otherwise I need to leave always the wifi on.
Is the reasoning correct ?
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Your basic reasoning is correct. I think the e-ink devices are checking for a change in the reading location at the start of each reading session and then sending it to the server at the end of the session. So, opening a book or waking the device will be the start of the session. The device going to sleep or returning to the home screen will be the end. I think if you opened the book and read for ten hours straight, there would be no updates sent. There might be. Doing one at a chapter change makes sense. Or every after certain number of pages or minutes. I don't know about this as I haven't tested.
The iOS app might be different. It is more accepted that tablets are connected and talking back to the servers frequently. So, maybe they update for every page turn. I wouldn't want my Glo HD to do this as it would use to much battery.
As to whether the e-ink device will do a "catch-up" when the WiFi gets turned on, I don't think so. I think it will wait for the next time it wants to update the status. I haven't explicitly tested this, but I think I have seen this during my normal usage. But, I have to say, if the syncing is important to you, then leave the WiFi on and let the devices do what you want them to do. Unless you are really trying to stretch the battery life, it is simple to let the device connect as needed.