I have a iPhone 7 plus with iOS 10.3.3, and I’ve had no issues with connecting the Mooshimeter with Bluetooth. Your Mooshimeter is in shipping mode, which is why you can’t connect to it. To take it out of shipping mode, connect the test leads to the Ohms & Common jacks. Once you do that, touch the leads together until you see the LED flash. This will turn on the Bluetooth transmitter on the Mooshimeter. Turn on the Bluetooth on your iPhone, and start the Mooshimeter app. When it detects the meter, tap on the icon to connect.