How to set up notificatin for incoming calls on android phone?

Telos needs to stay in the background to receive incoming calls and messages. Please do not terminate the Telos app after you close it. Some third-party battery-saving/memory-saving apps may terminate Telos. Please add Telos to their whitelist.

Please also make sure notification is enabled for Telos. Enter your Android phone's Settings > Application Manager, find Telos, enter App Info screen for Telos, and make sure "Show notifications" option is ON.