Apps are constantly evolving, and each update can require more powerful hardware or a newer operating system. The official TikTok app from the Google Play Store is built primarily for devices running Android 8.0 or newer. For a phone still on Android 5.1 Lollipop—a system released in 2015—this presents a major hurdle. Google ended official Play Services support for Lollipop in July 2024, so you cannot simply download the newest version.
As of 2026, the official Google Play Store often prevents older Android versions from downloading the latest TikTok app. This is done because newer features require higher API levels, advanced processor power, and more RAM than a 2015-era Android 5.1 device typically offers. tiktok apk for android 51 new