T-Mobile customers get free unlimited texting and data, and calls are .20 per minute within JA and back to the USA. If you're already a customer just call into Customer Care or stop in a store to make sure your account is set up for it, there is no extra charge. No need to worry about airplane mode and finding a wifi hotspot...

Yes, I work for T-Mobile, I am not trying to sell anyone anything, but if you have questions feel free to PM me.