Ask Slashdot: Are Custom Android ROMs Still a Thing?
Thelasko writes: Reading Kashmir Hill's series Goodby Big Five on Gizmodo made me consider switching to a custom Android ROM like LineageOS again. The Gizmodo articles make it seem that most phones are so locked down it is almost impossible to do. My last experience with custom ROMs confirmed that to be true for me. Is anyone having success? Why is LineageOS making builds for 185 devices if no one can use them?
Just because you (the average consumer) can't use it on a phone you got from $carrier, doesn't mean that others can't put it to use.
That's not meant to be an insult, by the way... unlocked phones (that are truly unlocked, not just 'unlocked' to allow a different carrier w/ the same tech) can be loaded with the ROM and taken to town.
PS: If you're gonna talk about it, then be kind and provide a link to LineageOS, mm'kay? :)
Quo usque tandem abutere, Nimbus, patientia nostra?
It's not impossible. It just requires doing your research before you buy. There are two things you need to look for.
1. Unlockable Bootloader
This is challenging because many OEMs will require you to go through a bunch of steps intended to make doing so as difficult as possible (beyond what is needed for data security.) There have been instances of OEMs just outright lying when it comes to bootloader unlockability. And of course, even phones that are to be unlockable have that disabled from some carriers. (Verizon, especially. Even Pixel devices can't easily have their bootloaders unlocked when purchased through Verizon.)
2. Community Support
LineageOS and xda-developers are good place to start. Popular flagship phones are more likely to have good community support around them if they're unlockable. Of course, you can always try to build AOSP for your own device, but community support will still be invaluable as most OEMs play pretty fast and loose with releasing their GPL code. (It's often difficult to get a fully working AOSP build with that the OEM gives you.)
In some ways we're now entering a golden age for Android roms, with the advent of Project Treble.
All phones shipping with Android 8.0+ are required to support Treble's platform abstraction layer, making life dramatically easier for custom rom bakers, going forward. Older phones benefit too; once their idiosyncratic hardware support is adapted to Treble, they can also expect easier and more stable updates. Generic System Images (GSIs) are now the norm, and will more or less run on any compatible platform.
Why would anyone engrave "Elbereth"?