If you've had a Fairphone, Moto Z phone or any other kind of recent modular phone, what has your experience been? I've read problems about battery life and the phones heating up. Are the problems you've run into (if any) more on the hardware or software side?

If you've had a Fairphone, Moto Z phone or any other kind of recent modular phone, what has your experience been? I've read problems about battery life and the phones heating up. Are the problems you've run into (if any) more on the hardware or software side?https://www.cnet.com/news/modular-phones-roundup/
https://www.worlds50.com/2018/10/if-youve-had-fairphone-moto-z-phone-or.html