PRO: No ads
PRO: More settings
Detects and indicates Internet connection status.
~New feature: Add auto disconnect function for alert
~New feature: Separate data counter and alert for mobile and Wi-Fi network
~New feature: Data counter limit alert
~New feature: Network data counter

1. Show Internet connection status in status bar:
Red: Offline
Orange: Bad
Green: Online
Blue: Online with data traffic
Purple: Online with high data traffic (512KB/second)

2. Use DNS query. No direct connection to server to minimize cost.

Try free version:
https://play.google.com/store/apps/details?id=com.vjt.app.internetstatus