Answer:
Just help him when he needs and make everything he likes especially success at school or work.. Show him that you are Active and diligent person who shows always perseverance... All that father loves to see them in his son or daughter.. Don't let him shout at all.. Don't say every single moment that u need a new iphone he will be bored and won't bring it for u.. So, for that show him that u deserve to be awarded for your willpower and perseverance at study or even work and not for only two or three days, try for more,, weeks, ok.
I hope these advices help u..