Manually downloading Trend Micro Mobile Security Personal Edition for Android
“If you are having problems installing Trend Micro Mobile Security from the Google Play Store, then we can help you out. Just follow the instructions below to get protected.”
Note: Check this setting BEFORE downloading the installer
Make sure you have enabled the installation of non-Market applications on your mobile device. To do this:
From your Android device, go to "Settings" -> "Applications"
Select "Unknown sources"; the 'Attention' pop-up appears
Tap "OK"
After you finish installing Mobile Security we recommend you change this setting back to its original state.