GigSky Global Data Nano SIM Card No need to look for Wi-Fi hotspots; No more high roaming charges; Top local carriers worldwide 1 SIM many destinations; All managed through one app Mobile device must be unlocked / not tied to an existing network Activate your SIM card and manage your account at www.gigsky.com, or with our iOS and Android smartphone apps., When you're ready to travel and use GigSky Data, sign in to your account and buy a Data Plan for your destination country.