12 Mar 2026 — iOS 15.4 adds the ability to unlock with Face ID while wearing a mask on iPhone 12 and newer. This update also includes new emoji, Apple Support
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(which creates fixed-width spacing for numbers) rendered in certain web views. This was addressed in the final 15.4 release to ensure consistent character alignment in tables and data lists. How to Get Fixed-Space Fonts on iOS 12 Mar 2026 — iOS 15
Apple does not allow direct downloading of system fonts from a website onto an iPhone. Instead, iOS provides a framework for installing fonts through created by third-party font management apps. ios 15.4 fixed space -font- download