Q: iphone 6 Plus mobile data

Hi Tendekayi, 

Thank you for using the Apple Support Communities!

Form your post, it sounds like cellular data is enabled on your iPhone, but you are not able to use that data. 

If this is correct, I suggest working through the eight steps outlined in the following article, including contacting your carrier in step 7. The article was written for a situation where you see No Service or Searching on your iPhone, but these steps are still relevant in your situation. 

If you can't connect to a cellular network or cellular data - Apple Support

Cheers!