Thanks to Google, your old Pebble smartwatch can connect to your Android phone again, even though it's old software.
You'll need to sideload the Pebble app using ADB, a computer tool for installing apps outside the Play Store.
This involves downloading the APK from Rebble, enabling developer options, and USB debugging on your Android device.
While it might seem complicated, many people successfully use this method, enjoying the simple charm of their Pebble watches.