When you start each new project, find the crappiest mobile device you can and set up remote debugging with Chrome. Test every change to ensure you start fast and stay fast.
Designing Great UIs for Progressive Web Apps
Owen Campbell-Moore

Recommendations for doing this? I’m an iPhone user and looking for a crappy Android device for testing my PWA. I found a cheap Note 4 running Android 5 and have it on its way, but as a primarily desktop-focused dev I’m not really sure what to be looking for in the way of mobile testing devices or where to find them.

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