To find out how to change Google Voice number on Android Devices, you are expected to follow a few important instructions. First of all, open the Google Voice app, move to the extreme left and then click on the devices and linked numbers. Now, you must set the device number on Android. Now, you are required to choose options from the suggestions and then click on the Save button. By following and implementing the above-stated steps, you can simply change the Google Voice number on Android.