I have a custom font embedded in my iPhone app that previously has rendered perfectly (both in the simulator and on the device). Today though, when I built and ran the app on the device it suddenly looked like this:

The problem only exists when running on the physical device. I have never seen this phenomenon before; what exactly is it? The other fonts that are used in the app render perfectly as before.
I think the font file which you include is corrupted by Xcode please delete the existing one and move to trash also and import new font file. Sorry for my english.