[blacksoil]

I think the biggest problem is in the alternative OS. Non-official OSes typically are unstable that I personally find not worth the time given phone is quite important piece of communication. As others have already mentioned, certain lines and brands, such as One Plus, Google Pixels, etc have unlockable bootloader so people are free to install custom OSes.

[andrepd]

I've been installing alternative ROMs on my android phones for almost 15 years. Never did I have any stability issues, on the contrary: the community ROMs often did a much better job than the official ones in terms of battery management, etc.

[d3w4s9]

Not trying to contradict what your say, but my experience from a few years ago was:

* If you don't use a super popular model, you would have very few choices for custom ROMs * Often custom ROMs are still at the mercy of original manufacturer for certain hardware support -- e.g. they need to release "base AOSP image" or something like that * Custom ROMs often had random things not working, e.g. NFC not functional or cell/WiFi signal weaker than stock ROM * Some come with certain crappy preinstalled apps. Sure you can remove them, but still annoying * Battling SafetyNet was a cat-and-mouse game which I gave up * Browsing xda-developers forum and following the latest reply of a 10-page, 200-post thread like back in the early 2000s was the only way to get updates of a certain ROM. OTA updates were mostly out of the question * ... and many more added to this

I don't know how much has changed, hopefully a lot. I don't doubt if you have a phone of a popular model, you can find a custom ROM that does not make compromises and is much cleaner and better than the stock ROM. But these days I simply don't have any time for tasking the risk and messing with these things and worry WiFi might not work in some cases.