What device to take for testing android?

Question

Android

Looking for a phone or, in extreme cases, a tablet on which to test different versions of android and different firmware?
Which device is better to take so as not to suffer with unlocking the bootloader, etc.?

Answer 1

In principle, you can take the Nexus, Pixel families. Google puts firmware on them. I updated and downgraded on Nexus 5 without any problems. But what's the point, is there an emulator?

Answer 2

The one for which there is good support from LineageOS (Cyanogen) - choose and read about the installation process. And the bootloaders are now almost everywhere blocked, the only difference is in the way of unlocking.

Answer 3

Your question seems strange to me.
Why test different versions of android on a specific device?
If we are talking about testing applications, then the point is not only in android versions, but also in system requirements and optimization for hardware resources.