is there any way to changing/auto resizing the font size according to the different iPhone screen as when i change the font size, the font size applied to other phone size as we
I faced this issue few months ago. There is no way to do it on storyboard for now.
You can do it by code by detect screen size or device type and set font size for each device. You can use this lib to do that
https://github.com/sebyffffd/SDVersion
Please use size classes to support different font size for different screens. Here is good tutorial about using size classes. adaptive-layout-tutorial
I ran in to a similar issue. I suggest to use this library: https://github.com/hamiz-ahmed/SizeOptimizedLabel
Specify the initial screen and font size. The font gets optimized automatically according to different screen sizes.