How do I stop iOS from converting a small pointing right triangle character into a rectangluar boxed triangle symbol?

I've tried entering the small pointing right triangle and the right arrow characters, both are converted by iOS into rectangular icons with a right triangle and a right arrow, respectively. Can I declare a different font to stop this from happening? Or is there a default setting I need to turn off?

All a want is a black small pointing right triangle:

Decimal Hex
▸ 9656 ▸ 25B8

Here is the Code:

NSString *title = [NSString  stringWithFormat:@"%d payments of %@ ➡ ▶", duration, [Utils formatPrice:payment]];
   [button setTitle: title forState: UIControlStateNormal];

Any suggestions would be appreciated.