Transformers (Glu)

Transformers by Glu is a mobile phone game produced in 2007 based on the live-action movie.

Plot

Optimus Prime was damaged and separated from the Autobots on his arrival on Earth and is now stranded in the Hoover Dam. Unable to risk their communications being detected, Bumblebee sends out a signal that reformats your cell phone to send and receive Cybertronian signals! Optimus Prime's systems are a bit scrambled, so you'll have to guide him through the dam- and beyond- until he recovers!

Mobile Tracker Units

Decepticon drones.

Purple "Light" drone These lightweight Decepticon drones are the first enemies you encounter in the game. They are easily dispatched with either blaster fire or hand-to-hand combat.
Aqua "Medium" drone These middleweight Decepticon drones can absorb several barrages of blaster fire and are more easily dispatched via brief violent bouts of hand-to-hand combat. They can be quite dangerous if pinned between two of them. Equipped with a sparking short-range blast.
Orange "Headbanger" drone These hot-running miswired drones can fire long-range fire blasts, but only the horizontal plane of the level they're standing on. They are extremely resistant to small-arms fire, but an aggressive physical offense will force them to abandon their fireball attacks. The headbangers don't seems to be properly insulated against their own internal heat, as evidenced by their signature spastic short-out after firing.

From Teletraan I: The Transformers Wiki, a Wikia wiki.