Apple introduced new speakers in the iPhone 7 (and 7S) and while you can now enjoy stereo sound with your ip7, these models have issues beaming toneprints due to changed speaker position.Changes in the enclosure also reduce the available magnetic field that the speakers produce. Solution/Workaround: 1. Holding the iPhone 7 plus upside down directly over the selected pickup; you have to hold it very close to the pickup. (see the video below) An alternative workaround is to use an audio cable from the iPhone's line out into the pedal input (mono)  ->  3.5 mm to 6.3 mm jack cable