Hello and welcome.
What time of day was the sun? This time of year, a phal can't take sun past 10 am or so. After 5 pm is ok. If it gets too much it can dry out the media, roots and leaves. That is what it sounds like to me happened. The leaves will not 'unwrinkle' for the rest of their time on the plant. Are the leaves yellowing or yellow from the sun? The black would need a picture of it to say anything about.
Pictures always help.