How to solve the sprint configuration not complete

[Android Central Question]

My j3 emerge was only a 3g data how will i do to make it back into a 4g???

The next one is that my phone has a sprint omadm configuration not complete how will i solve it??

 

[B. Diddy]

Welcome to Android Central! Are you currently on Sprint? Is the phone originally from Sprint, or unlocked from some other carrier?