As I wrote a few months ago, an update iPhone na iOS 7.1 has caused problems for numerous devices from around the world, due to which functions such as MMS and WiFi hotspot stopped working on them. This problem could not be solved in any way, as the system automatically deleted the data after entering the necessary data. But what was the problem? According to the official statement, the reason for this was the fact that the operator did not have an agreement with Apple and so the phone did not recognize the entered data and automatically considered it invalid.
However, that has changed in recent days, at least here in Slovakia. The operator O2 launched LTE pre support in the Czech Republic iPhone and shortly after that he also released an update of the settings for Slovakia. This setting change is on the old one iPhone 4 did not bring revolutionary news, but the operator's software was updated to version 16.2, which already solved the mentioned problems. So if you are after updating to iOS 7.1 had problems creating a WiFi hotspot, after updating the network settings you can count on the fact that the function will work again. At the same time, depending on the operator, you may lose the ability to edit network settings.
I am giving this important information