Android updates are increasingly supported for longer and longer periods of time on top of the line, high-end, or upper-midrange devices across brands, but lower-midrange and especially entry-level phones have it a lot harder. Qualcomm wants to do all it can to change that, however. The issuance of updates is very dependent on the maker of the chipset in your phone, as that company has to still actively support the SoC, and for most cheaper ones, the support window ends much sooner than for more expensive ones, perhaps understandably. Even at higher price points, the cadence of updates...
Source: https://www.gsmarena.com/qualcomm_wants_to_make_it_easier_for_phone_makers_to_issue_big_android_updates-news-63504.php
