Got the Note 8, question re: voice to text input with Gmail

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http://forums.androidcentral.com – In Language input settings, I have Google Voice typing selected. When I open Gmail, and try to enter text I am only given 2 choices: There is a typewriter that appears and right next to the SYM key on the typewriter is a key with a large T and a slanted pen leaning against it, with a tiny microphone in the upper right. If I select it, I get the S Pen page for input with the S pen. On my Galaxy S4, I also have Google Voice typing selected under Language input, but I also, do not get a microphone with Gmail. However, I do get a large microphone icon when I open the text app on the S4 and I can e (HowTos)