For a long time, I used the star "*" for degree. The temp was 80*. Then I found 2 ways to use the ? symbol. One is to use the dictation mic and say, "It's eighty degrees" and it shows as 80?. The other way is to press on the 0 and the ? option pops up.
Like this:
Sent from from my ancient but trustworthy iPhone 5
Like this:
Sent from from my ancient but trustworthy iPhone 5