Unless “Motion Only Advertising” is enabled, beacons and stickers broadcast their packets all the time. It might be that your smartphone/your mobile app stops listening/scanning for these packets after some amount of time. This is especially true if you turn the screen off => iOS/Android will by default suspend your app if it’s not in use.
Thank you for the reply. We use background scanning with estimote, even though it is not officially supported, and it seems to work best with one of your older SDK’s. Also, sometimes when the app is launched, it won’t correctly display the current beacons setting (from cloud or wherever it gets it from, given internet connection). (So it might say that motion only broadcasting is off, however it is still one). So I belive this was the main isssue.