Why didn’t my signal improve?

The app is for keeping the mobile data connected and boosting the network performance and internet speed. It tries to get you the best signal by searching for and selecting the best tower which has highest signal strength, but it can only give you the best signal that is actually available at a given time and location. You may not always see a drastic increase in signal if there is no better signal available, but the performance with the best available signal is always being optimized by the app.