[iOS] The onboarding prompt for permissions doesn't give the 'Always On' option

[kumpera]

It's not presented and we don't detect that later and ask the user to fix it.

[ApolloZhu]

If you are referring to location permission, it's impossible to directly ask for always on location starting iOS 13 (WWDC19 What's New in Core Location). Even before iOS 13, there will be an additional option of "when in use" if we ask for always authorization.

However, it's possible to ask for always authorization "immediately" starting iOS 13.4, as described in WWDC20 10660: What's new in location:

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First we'd like to address the changes we made in iOS 13 for always authorization ... it was not possible to get always authorization without first going through the provisional always state ... Asking for always permission when authorized whenInUse would put you into the provisional always state just like it would had you asked for it from notDetermined.

Starting in iOS 13.4 ... an app which has previously asked only for whenInUse authorization and got it may now request always authorization and have the user immediately be prompted to consider granting it without leaving the app's context.