My Galaxy S3 goes crazy when two bluetooth devices are connected.

[slave2thecross]

Ideally I'd want to be able to connect my bluetooth keyboard and mouse to an Android device at the same time without problems. Can you suggest anything? So far its only tolerant if I do one or the other.

 

[Rukbat]

It can handle only 1 HID (human interface device - like a mouse or keyboard) BT device at a time. Use an OTG cable and a USB keyboard or USB mouse. (It can handle a USB keyboard and mouse at the same time.)