Roaming charges on cell phones are ludicrously expensive. When I travel I normally just get a local sim card but that does have hassles (you don’t have your normal cell phone number attached to your phone).
A new service provides much better roaming rates by directing your roaming traffic to their network instead of your cell phone carrier. The cool gadget that allows this is a sticker applied to your sim card.
You phone must be unlocked for this to work. It works with iOs (iPhone and iPad), Android and other systems and all sim types (micro, nano and mini).
There is an option to get a local number to let people easily call you locally.
When applied to your home SIM card, the KnowRoaming sticker can detect when you are at home or abroad. When abroad, the KnowRoaming Sticker takes over and switches you onto the KnowRoaming network, enabling you to connect to our local partner networks worldwide. After returning home, the KnowRoaming sticker switches you back to your home mobile network and remains dormant.
They take your balance after 15 months of no activity which is unnecessarily hostile to customers. But for the right people it might be worth looking into if this option would benefit you.