I have an Arduino Mega 2560 and a BLE Shield v 2.1 from RedBearLab. When I try to connect it through Bluetooth from my laptop to 'BLE Shield', it says 'Connected!'. When I try from a Windows phone, it also says 'Connected'.
But when I try to connect from an Android device, it gives me an error: 'pairing rejected by BLE shield' or 'couldn't pair with BLE Shield because of an incorrect PIN or passkey'.
What seems to be the problem?