lineageos-fairphone/KnownToWork/Summary.md

Known to work

App Stores

1. F-Droid, the OpenSource app store
2. Aurora Store, googels paly store accessed anonymously

Browser

1. Fennec, firefox for mobile

Messaging

1. Signal, messaging over signals server, encrypted
2. DeltaChat, messaging over email, auto-encrypted
3. Telegram, messaging over somehows server, not encrypted, reads your contacts, not recomended

Calendar, Contacts & Files

1. Finde some ideas described here: Sync your data

Navigation

1. OsmAnd, uses Open-Streetmap maps for offline navigation (pdestrian, cycle, car, truck ...), speech output possible.