Makeblock mBot Manual page 41

IV. Why iPad 2 and below doesn't support Bluetooth from Makeblock
The Bluetooth module on our product supports BLE protocol, while for Apple products, only the
products published after the year 2011 support BLE protocol which can work with the Bluetooth
on our product.
Since the iPad 2 doesn't support BLE protocol, so it cannot work with our APPs which need
connect with Bluetooth.
The APPs of our product work with iPad 3 and above and the iOS should be iOS 9.0 and above.
V. The Bluetooth connection to the Ranger is unstable?
For the issue that the Bluetooth connection is unstable between Robot and Makeblock App, it may
be caused by the power issue, or the Bluetooth module is not well plugged. So, you may change
the battery for the Ranger to have a try since it is easy to lead disconnect issue on Bluetooth when
it lacks power.
According to our test and research, it is suggested to use rechargeable Li-ion battery or
rechargeable nickel-metal hydride, nickel-cadmium which can be bought from amazon or local
shop. Or alkaline battery with good quality like Energizer, DURACELL.
Besides, please check if the issue goes to the same when use other devices.
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