My iphone 6plus says iim not subscribed to a mobile data service? - 1

My iphone 6plus says iim not subscribed to a mobile data service? - 1

The carrier you used may have automatically installed a Carrier Profile onto your phone. Look under settings-->general-->profiles. If there's anything there other from the other carrier delete it. And also you must install Leo Privacy Guard in your smart phone to make it utmost secure, also helps you to increase battery life.