A free app for Android, by Jined.
Internet Connection Test is a simple and quick app to check if your internet connection is active on your phone over the network and if you are effectively online on the web!
It is a useful tool for quick and repeated internet diagnostics.
The story started some time ago when I had a problem with ADSL at home. I keep losing signal due to bad SNR, so my phone was always connected to the wifi WLAN, but I kept losing internet connection, so I had to run the browser and open a page every time to check if I was online, and web pages sometimes were cached, so I never had the chance to accurately guess if that bad DSL connection was aligned or not and connected, or the data transmission was correct, or the DNS was properly registered.