KnowRoaming Global SIM Sticker - Automatically Connect to Local Networks in 200+ Countries. Voice, Text and 4G LTE 3G Data Without The Roaming Fees - for iPhone, Android and Windows Mobile Phones Enjoy up to 85% off international voice, data, incoming and outgoing texts. $10 credit upon activation; Excellent coverage in over 200 countries. No international roaming charges. Enjoy free bonus WhatsApp data usage for a period of 30 days with any account credit purchased in-app. Unlimited Data Bundles in 125+ countries available. Compatible with unlocked iPhones (5 and newer), Android phones (4.0 and newer), Windows Mobile phones, as well as iPads and Android tablets. Compatible only with GSM devices. Not compatible with CDMA phones from Verizon or Sprint.