I had problems to install Sygic 12.2.1. Before I installed Sygic 12.1.3 on Samsung S3. I found the following solution: leave Sygic as it is and unistall. Your data will stay in Sygic. Download Sygic:GPS Navigation from Play Store and install. After install it will say Trial periode is over. Ignore and rename Sygic in Sygic_1 and uninstall Sygic. Install Sygic 12.2.1 and if finished ( don't restart!! ) rename Sygic_1 into Sygic and it works as it should be. I hope this is a good help for somebody. Good luck.