Hello,
Here's the guide how to install Trend Micro Mobile Security for your android:
How to Install Trend Micro Mobile Security on Android | Trend Micro Help Center. For your computer if you have the same serial number, you don't need to do anything. But if you have new serial number you need to open your "Trend Micro Maximum Security" click the expiration date on the lower right, then look for " Change your activation code" and enter your new serial number to stay protected your computer.
