Iphone5s turns on 4G traffic and only displays 3 G. How to solve this problem?

This may be because the mobile phone card has not turned on the 4G function, and you need to go to the business hall to turn on the 4G function to use the 4G function.

The opening method of 4G function is as follows:

1, click Settings.

2. After entering the setting menu interface, click Cellular Mobile Network.

3. Click the cellular data option.

4. Click to enable 4gp. Green lights up and gray goes out.

Tip: You need to turn on the 4G function in the business hall before you can use the 4G function. Otherwise, even if 4G is turned on, the 3G network will be used.