[Ravique]

Sure you can combine them, start the metatrader on your computer, start the custom indicators on the chart. Sit down some one in front of the computer, then take your iPhone and go out. Once you need to check the chart or open the position, you dial the person,s number, he explains you what is happenening on the chart, you take a desicion, explain it to him, he makes it happen. There you go, iPhone trading.
P.S. If you want to do mobile trading, buy a decent communicator not that recreational media center with a telephone in it.