I have a Pixel 7 with GrapheneOS that used to be my daily driver. It's nice, but I'm trying to move away from doing everything on an Android or iOS smartphone, so I'm going the multi-device route. I still use my Pixel for banking apps on wifi at home and as a Briar server.
I got a OnePlus 6 to install Linux on because it's one of the more well-supported options and I got it on eBay for $80. It works okay, but doesn't check enough boxes to replace any devices. I'm waiting on an MNT Pocket Reform computer that I hope can be a better, albeit more bulky option.
I got a Mudita Kompakt as my phone primarily because of the switch that can cut power to the GSM module and the 4-day battery life. It's slow, but calling, texting, and Signal work fine on it. I use it with a $10/month 30GB/month T-Mobile data-only plan and a VoIP phone through JMP. chat.
I use a digital camera for photography and a Tangara music player.
I got a physical transit pass to not need a smartphone for that.
When the PocketMage kit becomes available, I hope to offload notes and calendar to that. I'm also playing with replacing other smartphone functionality with a Meshtastic or NomadNet bot hosted on a server at home combined with a T-Deck LoRa device for things like live transit schedules and weather forecasts.
It is a lot of different devices that take up a significantly larger volume and are heavier, but what I've found is that I don't need all of them all of the time and more often than not I still just have the Mudita Kompakt in my pocket.
It's good. I use it. It's not FOSS.