Compatible Model: For Raspberry Pi 3B/2B/B+ Type: Jumbo-Spot-RTQ Note: 1.OLED is Only Display While your WIFI connected,and Display Type OLED Selected in pistar 2.If the OLED doesn't work,there maybe have a short circuit on the solder bridges.Please examining the solder joints underneath the oled,you can find a solder bridge between 2 of the pins. Please clear the bridge and the oled will operating normal.