Get this tracker and it will allow you to track your dog or pet via gps and a data only sim. Simply insert a SIM card into this device and then enclose it in a water proof case along with connecting a lipo battery. Pull this off and you’ll have a dirt cheap dog tracker. Smarty do a data only sim for £5 per month so you are set. It charges via usb and you can use a tracking app like gps365 which will show you real time updates on the location as well as features like geo fencing and remote shut down. Thank me later