So I’m taking my iPhone into Apple today. When I use Waze etc it keeps drifting away from the road and takes a few seconds to get back on track. The iPhone 7 never does this. I have compared both phones with the gps diagnostic app and the 7 has a much stronger gps than the x. I have tried all the tricks online about taking the sim out, reset network settings etc but doesn’t seem to make a difference. Because of the weaker gps could it be that the heated windscreen or dashcam in my car is interfering with it? It probably interferes with the 7 but because of the stronger signal it doesn’t make it go off track. Just wondered if it’s worth them replacing the phone to try a new one or if the same is going to happen with all the phones since the gps signal is not as good on an X compared to 7. After googling it’s seems to be a difference of opinion.