The OnePlus X is definitely a classic! While it no longer receives official updates, many users have kept it relevant with custom ROMs like LineageOS, which provides newer Android versions and security patches. These ROMs can improve performance and compatibility with current apps. Rooting the device and adjusting settings like restricting background apps can also help. If you're willing to explore these options, you might be pleasantly surprised by how well the OnePlus X still performs. Have you tried any custom ROMs yet?