GSM Signal Monitor 1.5 is out now!
This version features new app visual style, additional logging options, bug fixes and Android 5.x and up support.

Version 1.5 Change Log
* New app visual style
* Compatibility with Android 5.x and up
* Fixed bug when clicking over the app notification in the notification area
* GSM Signal monitor will now log (optional) information when the phone is entering roaming state and changes in your mobile data connectivity.
* Fixed bug when no notifications will be made on some devices
* New Google play services version