Manufacturers always design their GPS dog trackers to work with existing technologies. Most come with both iOS and Android platform compatibility, although some have a special preference for iOS or Android devices only. There are also those that work exceptionally well with 3G and 4G cellular coverage, but not on legacy platforms like 2G and 2.5G. If you really want to know if your GPS dog tracker is compatible with your electronic device, then you should read the product description to determine device compatibility.