Shitphones and why you need one
Today, we are — sadly — dependant of smartphones to live and work. Digital payments on-the-go, government apps, e-commerce platforms, proprietary instant messaging and multi-factor authentication software... the list goes on. These apps are usually heavily bad optimized, slow, battery-hungry and a disaster in terms of privacy. It would be great to keep them away from our main mobile phones...
And we can!
I started calling shitphone old, secondary smartphones that usually remain stuck at home, where you load them with all the app bullshit you need to have, to use when needed. This way, you keep your main mobile phone mostly free from these bad pieces of software.
My case: on my main smartphone, I have installed WhatsApp (unfortunately mandatory for my college and work — Brazilians can't live without this shit), the apps from my main bank (to make Pix transactions on-the-go) and mobile phone carrier (to check my data usage and recharge the data plan when needed) and, as a sad consequence, Google Play Services and Store.
Stored inside a drawer in my room, I have an old Motorola Moto G5 that belonged to my mother — almost 10 years and still going strong with Android 8.1, the last version it officialy supported. There, I keep apps for my secondary banks (where I receive my wage), government, food vouchers, college's Microslop 365 and Steam (since they don't support traditional TOTP-based MFA), and so on.
Since it remains offline most of the time, I only recharge its (crazy dead) battery once a week. After debloating Android, it runs fairly quickly, even with Google Play Services and Store installed and fully updated. And talking about updates, all the apps I need still support this ancient Android version, so no need to search for a custom rom for now.
In short: take out your old Android device from the drawer (or get the cheapest new one you can find), debloat it and move the heavy load from your main device. Your smartphone's battery and smoothness — and your own privacy — will thank you.