iPhone 6 find 3 Beacons in the "Estimote App", but nothing by scanning

The iPhone 6 does not show any Beacons when I scan for Bluetooth devices.
How can I find the Beacons by scanning of the Bluetooth devices?
(The iPhone 6 successfully find three Beacons in the “Estimote App” using the same iPhone.)
Thank you very much for the answers

Hi @Tatjana,

you have to scan for BLE devices. It seems to me that the standard scan is for “standard” devices and not for BLE devices.