Satellite Phone Solutions provides airtime services for all of the equipment it sells. Our sales representatives will be glad to talk to you about your needs and assist you in finding the best solution. In preparing to make your decision, it is important to review the coverage maps from the various satellite service providers - see below. You will note that Globalstar and Thuraya have regional coverage. If your trip will be to the areas shown in their coverage maps, then they would provide a good solution. Inmarsat provides near global coverage, but, because their satellites are geostationary (23,000 miles up over the equator) their coverage does not extend to the North and South Polar Regions. Iridium's satellite constellation is in polar orbit, meaning the satellites move (called Low Earth Orbit) and pass over the North and South Pole in each orbit. Iridium, therefore, offers coverage throughout the world. Remember in all cases, satellite phones do not work indoors and you must have clear access to the sky so your terminal can communicate with the satellites. You can click on the "see airtime" tab to review our postpaid airtime rates for each service. PrePaid Airtime is available as a product that you can add to your cart when you purchase your phone.