iPhone 5 updated to 6.1.4 from 6.0.2, but doesn't connect to LTE network.
I purchased an iPhone 5 recently and it came with iOS version 6.0.2. I updated it to 6.1.4 as this is the latest version as of now. Everything went off well, I even got the carrier settings for LTE during the update. But the phone won't join LTE network! I have restored, reset, setup as new couple of times. I have even got it replaced once. The new one also doesn't connect to LTE after updating.
Also as this iPhone was purchased through a corporate offer I have seen other 3 iPhone 5s behave the same way. They don't connect to LTE after updating.
This is the second iPhone in the house. The first one is 6 months old. And it has been updated to 6.1.4 also, but from 6.0.2 => 6.1 => 6.1.1 => 6.1.2 => 6.1.3 => 6.1.4. This phone connects to LTE network. Both phones are on same operator.
Has anyone faced something similar? And any solution for this?
iPhone 5, iOS 6.1.4, 64gb