A:AnswerThe Tab 4 , 10.1" is an Android 7.1 tablet, and it does have a built in microphone. With the proper voice to "text apps" you can do voice to text.
A:AnswerLenovo says it can be connected via HDMI, but I haven't tried it. However, it can also use Google's Chromecast to connect its display to your TV.
A:AnswerYou can download Microsoft mobile office for free. Downside on the free version, it is read only. There are other "compatible" apps since "office" is so popular.
A:AnswerI've only had this tablet for two weeks, but in that short time, it has done a smooth and successful upgrade to Android 8.1.0. I'm enjoying the great speed and battery life.