μι is the name of the letter μ, so not really any difference but when speaking and writing you only say/use μ :)
Now we're just starting with practicing the Greek letters, it's really hard. But what does 'mee' mean?
Ah, thanks! I was thinking of the noodle dish but couldn't believe that was what they meant.
Hello Zoe! It really depends on your device, so the best way is to search for instructions on 'how to add keyboard _' where the _ is your device. :)