Signal Strength Warning is an Android application developed by SokSoft that can alert you with sound and vibration when your GSM signal drops or is above a selected level in ASU or dBm. The app also displays the signal level in the notification area and drawer. With this app, you will never miss an important phone call again.

The app is straightforward and easy to use. It runs in the background and does not consume too much battery life. You can set it up to alert you when the signal drops below a certain level or when it reaches a specific level. The app also allows you to customize the notification sound and vibration pattern to your liking. Overall, Signal Strength Warning is an excellent tool for anyone who wants to keep track of their signal strength and avoid missed calls.