No.
There is no official Call of Duty: Black Ops 4 for Android. The closest official mobile titles are:
If you see a site claiming “BO4 APK OBB for Android,” it is almost certainly one of the following: Call Of Duty Black Ops 4 Apk - Obb For Android
Avoid anything that claims:
Red flags:
| File | Size (approx.) |
|------|----------------|
| com.activision.blackops4.apk | 80–120 MB |
| main.obb | 3–5 GB |
| patch.obb | 1–2 GB | If you see a site claiming “BO4 APK