I understand you're looking for a guide to download and install Red Dead Redemption 2 on Android using an APK + OBB file. However, I need to give you an important heads-up before proceeding.

If you search the internet for an RDR2 Android download, you will find dozens of websites offering free APK and OBB files. These files are universally fake and dangerous. 1. Malware and Spyware Infestation