How to change the network mode on my Apple iPhone 5S
You can select a preferred network mode for your Apple iPhone 5S (for example, 4G or 3G network). This setting will influence the data speeds that the phone can achieve.
1. Touch Settings.
2. Touch Mobile Data.
3. Touch Voice & Data.
4. Touch the desired option (e.g., 4G).
5. The setting has been changed.