Here are some steps you can try to use macrons without the dictation option popping up. NOTE: this process is only applicable in Outlook application.This works for both Windows and Mac computers. To create macrons on the iPhone simply add the Latvian Keyboard to your default keyboard. Latvian has macrons as part of their character set. It's easy to get macrons on your smartphone, just hold your finger on the vowel and the macron will show up as one of the accent options. Swiftkey for tablets and phones. Swiftkey allows you to add macrons and spellchecks Te Reo Māori. This shows you how to add Te Reo Maori macrons to your Gmail. A macron is a line above a vowel to indicate that it should be spoken as a long vowel: ā, ē, ī, ō, ū, Ā, Ē, Ī, Ō and Ū.