I use the Drone Mods gps tracker and have had no interference problems. I can't say what others may do. Mine was made specifically for this purpose. It's not the cheapest but it seems to work well and seems well built. Standby is about 12 days I think. I call it many times a day. I have found a few quirks about using it but I think it is the internet and phone services that cause it rather than the tracker. See DroneMods.com