Joplin is great for notes. I’ve set it to sync with a free Dropbox account and have used it on Android, iOS, Linux and Windows.

We’re all friends and some of us have both Android and iOS phones. Facetime is excellent.

I also use Signal or Skype, though the latter usually from my PC.

I’ve been back and forth between Android and iOS several times, I’m happy with either these days.

I use services that work on both platforms like GMail/Cal/Contacts, Dropbox free (10GB)/oneDrive + Cryptomator, Bitwarden, 2FAS, Signal/WhatsApp, etc. There’s no lock-in on either platform as far as I’m concerned and I can switch over in half an hour and keep going.

I charge my phones with an ancient 7W Qi pad, batteries usually last 3-4 years before any degradation is mildly noticeable, at which time getting a store to replace it is trivial or I sell the old phone and buy a new one - Apple/Samsung/Google, whatever takes my fancy.