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Question: Why is iOS automatically fetch email only available when on power and wi fi? Makes no sense to not have it available when actually mobile.

I use email primarily in my iPad and iPhone. iOS 11 has an automatic fetch option but it’s only available when on power and wi fi. This should be a truly mobile option and work at all times.

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Dec 15, 2017 2:00 PM in response to AntNupe In response to AntNupe

That is what the "Automatic" setting does - you can choose of the regular timed options (15 minutes/30 minutes/hourly) if you want a regular email fetch (regardless of connectivity type and power source).


Note this only applies to pulling email from the server (such as pop or imap email retrieval) apple call this "Fetching". The phone has to make a conscious decision to go look for mail, connect to the server, check for/collect email, and disconnect. This consumes power and data to do all that so tou don;t want to do it frequently on batter and cellular.


Other types of email service that work over https do "Push" email, where there is continuous channel established out to the server over which the server can push email back to the phone as it arrives. When the channel is idle only very small, infrequent 'keep-alive' packets keep the connection established.

Dec 15, 2017 2:00 PM

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Dec 15, 2017 2:26 PM in response to AntNupe In response to AntNupe

The phone needs an Internet connection. If it is not updating email when not connected to Wi-Fi then you either have Cellular Data turned off, or Cellular Data for email turned off. Note that Wi-Fi is always off when the phone is locked and not connected to power.

Dec 15, 2017 2:26 PM

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Question: Why is iOS automatically fetch email only available when on power and wi fi? Makes no sense to not have it available when actually mobile.