Why is my phone Huawei Y600 not showing data when I switch it on?

My phone Huawei Y600 is not showing  data when I switch it on, why? 

Sorry, but what data are you looking for? Are you looking for the icon that says mobile data is on? If so, make sure it is on. If you are using a custom home launcher, maybe it's blocking some icons, please check.

Not the answer you were looking for?

Are you on the best cell phone plan?