[Issue] Having Blurry and Jagged Lines over User Interface while preparing Build for iOS

I am having an issue with the IOS Deveopment, the app is working fine ,but when we comes to the IOS development , All the UMG is kind of blurry and have Zig Zag lines. Umg is having UI as texture group .

I dont know which settings in Unreal should be changed to fix this issue. Seems like the device profiles for screen size are messed up.

Is there anyone who has worked for iOS apps for Unreal, and can help me to fix this issue.

Thanks & Regards,
Paramjot Singh

Which version of the engine are you using and on which device are you testing?
Pre-4.20 you need to play with the DPI scaling curve: DPI Scaling | Unreal Engine Documentation
4.20 +, the mobileContentScaleFactor is also meant to effect the resolution of the UMG on iOS: Performance Guidelines for Mobile Devices | Unreal Engine Documentation