The Sapper won't detonate the explosives. Solution: This is an original game bug, not an Android bug. You need to have the detonator in the Sapper’s direct hand slot (not the inventory). Double-check your item placement.
Many websites offer the original PC game files wrapped in an emulator (such as DOSBox) packaged as an Android APK. commandos behind enemy lines android download exclusive
To play the full, original 20-mission PC experience on Android, you can use emulators that run Windows environments: The Sapper won't detonate the explosives