Or do what I do with my own iPhone and not my work iPhone. Go buy a $40/month unlimited data plan with Clear, and they'll give you this little portable router that has a f***ing sick battery life, and just use WhatsAPP and iCall. You'll get 4G LTE coverage almost anywhere, or just standard 4G if LTE isn't available. Not sure about where you're from but it's a sweet deal where I am.
Hey, $40 a month for unlimited talk, text and web on your iPhone is a sweeter deal than going for unlimited plans on other carriers. I mean don't get me wrong, I love the fact that I can make calls whenever I'm on the train underground at certain parts while others can't thanks to Verizon's services, but the charge for it is way too high. I don't call often anyways, I just text, email, facetime, so why would I need to pay the obligatory 50$ for a calling plan that I barely use with 99% of the minutes I paid for left unused every month? I pay 5 bucks less, for more than what I get standard with Verizon, AND I'm not obligated to buy any other services with Clear