To set up an Arlo pro 3 camera you can access via the Arlo app. You can set up Arlo go cameras in an area with cellular data coverage. You have to make sure that cameras must be added in your account one at one time. Now to set up your Arlo Go camera activate the sim card. Now you just have to place your Arlo Go camera in the high cellular network coverage area. Now press the latch and pull back gently to open the battery compartment. Now you have to check the left slot that the LTE sim card is installed in the camera. After that you have to insert the battery into it and close the latch.