Flytrex Sky communication is over 3G GSM network. To start using the Sky you will need to get a micro SIM with data plan that uses 3G GSM network from a local carrier.
3G GSM, the technology used by the Sky, is the most commonly used network around the world today and you will definitely find at least one, and probably more, local carriers that you can use with the Sky in your country without a problem.
In terms of data usage, the Sky uses compressed data protocols and consumes very little data. Most chances are that the smallest and cheapest data plan available will do great for the Sky.
To help you get started with the Sky we've collected below details about carriers and data plans used by our pilots. Please note that even if your country is not listed you can definitely use the Sky in your country with any of the local GSM carriers.
In the US two of the major networks offer 3G GSM coverage: AT&T and T-Mobile. There are several other smaller networks that use GSM as well.
Most of our users in the US have found that H2O Wireless are offering the best deal on data plan that is optimal for use with the Sky. H2O offer a plan called Pay-As-You-Go for $10/3 months with 100mb of data. 100mb of data is more than enough for 3 months of flying with the Sky. H2O are using AT&T network hence offer very good coverage. Based on users' feedback this plan offers the best value for Sky pilots and keeping the data fee very low at $3.3 per month.
You shouldn't have any problem using AT&T, T-Mobile or other 3G GSM carriers in the US as well.