Follow below Steps:
Step 1: Navigate to team viewer site using this link and click on download
Step 2: Click on Download TeamViewer
Step 3: Click on Keep on bottom left corner of browser.
Step 4: Open Downloaded File.
Step 5: Double click on Downloaded File.
Step 6: Click Continue for Introduction.
Step 7: Click Continue for Licence.
Step 8: Click Agree
Step 9: Enter your system password and click Install Software
Step 10: Installation complete. Click Close.
Step 11: Open Google Play store using this link and search for "quick support" and then click on very first result with icon QS.
Step 12: Click on Install.
Step 13: Select your mobile from list.
Step 14: Click on Continue.
Step 15: Enter your gmail password.
Step 16: Click on OK.
Step 17: Open Quick Support on your mobile, wait for remote control feature activation.
Step 18: Your id will be displayed on mobile. Enter that id on your team viewer installed on Mac Operating System.
Step 19: You are done