Mobile Phone Apps
Mobile Phone Apps that you might find useful.

I have a Google Pixel 8a with GrapheneOS installed.
Here are some apps that I have found useful.
Aegis Authenticator – used for 2 factor authentication
AntennaPod – download your favourite podcasts
Bitwarden – password manager
Fossify – successor to Simple Apps - calendar, calculator, clock, file manager, gallery etc.
DAVx5 – sync contacts and calendar with your Nextcloud instance
Gboard – ability to swipe and type on keyboard (not open source, but the only good way to swipe and type. You can kill network access to data on the app so no information is sent. The open source equivalent is AnySoftKeyBoard but it's not great. Another option is FUTO Keyboard.)
ProtonMail – email client
Samourai Wallet / Ashigaru Wallet – privacy focused bitcoin wallet
Signal – secure chat
Telegram – group discussions
NewPipe - YouTube client with some premium features and no ads
RiMusic - great music player, also works in Android Auto
SMBSync2 - sync files from phone to samba share