I wrote an article that analyzes how LineageOS is used, including the number of builds and installs by device manufacturer, country, version, device release year and status (official, discontinued and unofficial), plus installs per capita. See:
https://amosbbatto.wordpress.com/2025/11/02/lineageos-statistics
I added a section at the end of the article about the threats that I see to the LineageOS project, and frankly the outlook is grim for custom Android ROMs. With the recent changes to the bootloader unlock policies at Samsung, Xiaomi, Realme and ASUS, the brands that LineageOS can be installed on will be reduced from 42.5% of the global smartphone market to just 7%.
Long ago, I predicted that the world would eventually need mobile Linux, because Google would shut down AOSP, if the AOSP derivatives like LineageOS ever became too much of a threat to Google’s profits. While Google has restricted AOSP in a number of ways over the years, I never foresaw the threat if Google pushed the rest of the phone industry to start offering longer support for their phones.
Because the Android phone makers now have to offer longer support for their phones, they are being pushed toward a business model based on the collection of users’ personal data that is used for targeted advertising and the training of AI. While the old business model based on hardware sales and planned obsolescence was horrible for the environment, the new business model is going to be horrible in terms of personal privacy.
I doubt that the restricting of custom Android ROMs to just 7% of the smartphone market will lead to large numbers of people switching to mobile Linux, but it does clearly show the problems with the industry, where people don’t really own their own hardware, because they can’t install the software that they choose on their phones.