QOS features cell phones scattered around the levels of which you can pick up and gain additional information.The phones omit a tone when you are close and flash. You simply highlight them press X or Square and you'll see what details it has given you - often being helpful for the mission you're on. The cell phones info is ordered from earliest to latest. So if you pick one up and there's a gap in the list, you've come too far and need to go back if you can and find the missing phone. You can press the Back button at any time to to see what cell phones info you have gathered. if you die before reaching a checkpoint you'll have to grab the phones again.
CELL PHONES
1. As the mission begins turn around and a phone is behind you near the ammo crate.
2. In the alley with the parked trailer. Go inside the trailer and a phone is on a crate.
3. After the alleyway with the parked trailer, you'll unlock a door. A phone is on your left as you enter.
4. You'll enter an outdoors car park with a white lorry with two trailers parked. Inside one of the trailers is a cell phone.
5. Once you enter the rooftop area if you walk to the left side there is a phone next to some red pipes.
