It's going to be hard... Customers are annoying and they want really specific phones. Do you have red Nokia, blue Samsung or grey Sony with Android? If not you need to order it but there are only 3 spaces for them. If you get 3 the same colors you can be a real "red tycoon".  Only currency here is your REPUTATION, so be careful because you can lose much more than money. 

CONTROLS:

With Z - you can choose phone to offer and order a phone

With X - you make offer

Hopefully customer will like it!

PS Look out! iOS is available on these phones too!