Trying to find apps which don't work without Google services while testing a bit more before flashing on my Pixel 3a to finally have a de-googled daily driver.
Even on Graphene my banking apps and WhatsApp are working, no notifications though.
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There are the obvious incapacitated ones named or owned By Google (Maps, Waze etc.)
The first surprising one to complain is (backed up to Google Drive).
There is some tradeoff with the camera although Open Camera is quite configurable.
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Curious where did you have the most inconvenience running and which are solved by ?
So far the tradeoffs I can gather:
* notifications
* camera
* navigation (with traffic info)
* some apps which might not work even with microG
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Push notifications work fine on GrapheneOS as long as apps don't have a hard dependency on FCM, and they won't magically work on CalyxOS without enabling FCM to send push notifications through Google's FCM service, including for apps which don't depend on it.
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CalyxOS and GrapheneOS have the same camera infrastructure. Camera functionality and quality are identical in the same app on either OS.
It's possible to use Google Camera on either, but it is not something we recommend, and it's unlikely to continue working long-term on either.
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Some apps ship different builds outside the Play Store and their Play Store releases assume the presence of Play services. Some like WhatsApp need to have a toggle enabled to turn on their own push notification implementation in the background.

