Setting up Delta on Android starts with the APK file, and the most important step is also the simplest: download it only from the official Delta site. Android lets you install apps from outside the Play Store, which is useful for tools like Delta, but it also means fake APK files can circulate. A repackaged APK can look identical to the real one while carrying something harmful, so check that you are on the official site before you tap download. Once you have the file, open it from your downloads or file manager. Android will ask you to allow installation from that source, because the app did not come from the Play Store. Allow it for this installer only, then let the installation finish. When the install completes, you will see the Delta app icon on your device. Open Delta, not the normal Roblox app, and sign in to Roblox through Delta. From there, join any game you want to test. Inside the game, open the Delta executor panel. This is where scripts are pasted and run. Copy a script from a source you trust, paste it into the executor, and press execute. If nothing happens, check the basics first: make sure you are actually inside a game, that the script is written for the game you joined, and that Delta has finished loading. A script made for one game will usually do nothing in another. If Delta crashes on launch, clear the app cache, restart your phone, and reinstall from the official file if the problem continues. Storage and RAM also matter. Delta plus Roblox together use more memory than Roblox alone, so close background apps before a long session, especially on a low-end phone. Keep your device software up to date, and avoid running Delta alongside mods or tools that change how Roblox behaves, because combinations like that are a common cause of crashes. The key step is part of the normal flow. When Delta asks for a key, follow the on-screen steps on the official site to get one, then paste it back into Delta. Do not buy a key from a third party and do not share your key, because keys are tied to your session. If the key step fails, wait a few minutes and retry rather than trying a different key site. Finally, use Delta sensibly. Test scripts on an alternate account first, never paste a script that asks for your password, and stop using any script that behaves strangely. Done carefully, Android setup takes only a few minutes, and most later problems come from skipping the official download or pasting untrusted scripts. This is an independent, unofficial guide, not affiliated with Roblox Corporation or the Delta developers. Full Android steps are here: delta executor apk.