Solved! How can I remains in 4g LTE only

Solution
You would need to talk to your carrier/service provider about it. However, as far as I know, it is not possible to stay in it only and not lose connection. Some areas don't have it and many carriers/service providers only provide it for a limited amount of data usage.
You would need to talk to your carrier/service provider about it. However, as far as I know, it is not possible to stay in it only and not lose connection. Some areas don't have it and many carriers/service providers only provide it for a limited amount of data usage.
 
Solution