Last month I opened a drawer and found my Google Nexus One smartphone. It hadn't been turned on for 10 years and I figured the (easily removable) battery was done. I tried charging it anyway and to my surprise, it actually recovered and charged.
It worked fine when I turned it on, but it's essentially a paperweight now because the US mobile carriers have all upgraded to 5G, and this is a 3G phone.
The thing that struck me while doing this is just how tiny the Nexus One is. It's a full-featured (for the day) smartphone, but it's less than half the size of pretty much all the mainstream smart phones today. Battery life was decent, and the apps were pretty functional.
My current phone is about twice the length, 50% wider, and twice as heavy. Battery life has been getting progressively worse with background apps draining your battery so they can scoop up and market whatever information about you they can. Battery life has also been impacted by the BLE tracking features, which run all the time.
I wish I could upgrade the Nexus One with a 5G radio -- it would be a great phone today.
Same here with Samsung J6. Super thin and light, removable battery, SIM card, microSD, and of course headphone jack. Would be great for everyday use, currently relegated to playing a single white noise .mp3 for kids to sleep.