Your assumption may be correct to some extent, but in most cases, it is incorrect. iPhones are like Ferraris or Lamborghinis, which are only associated with the super-rich. There are a variety of solutions available, including companies who offer smartphones on a part-payment basis or mobile operators that cooperate with Apple. FX is also not just for the super-rich; anyone with a small amount of money can invest in foreign exchange.
You should instead focus on
iPhone app development dubai from a company with a proven track record of developing apps. In the long run, this will be quite beneficial to your FX business.