Connect on your terms: Affordable plans. No contract. Reliable network. The H2O Wireless SIM card offers the best of all worlds providing support as well as freedom to adjust. H2O’s SIM starter kit is the gateway. It includes a 3-in-1 (Triple) SIM Card with standard, micro, and nano sizes to fit unlocked phones. Just activate the SIM online at h2owirelessnow.com and select an unlimited plan. The SIM card automatically configures your H2O data settings. Need help? Support is available.