You just jogged my memory about a surprisingly complex Metal Gear game I had on my Nokia N95... It was in third-person side view (Shinobi style) and some stages had you piloting a drone to areas you couldn't reach? Looking back I can't find any reference to it... maybe it wasn't an official Metal Gear game but some sort of "off brand" game that was implied to be like Metal Gear?
It was an interesting era of surprisingly capable games that is mostly lost to time as the iPhone came not long after and dominated the scene.
This game looks cool, will check back in later!