The American version of Apple 5s has a 4G switch, why can t you use the 4G network

It is recommended that you restart the mobile phone network first, you can turn on the airplane mode - turn off the airplane mode - search the mobile phone network again; Or follow the steps below to troubleshoot the reason why the 4G network cannot be used:

1. Whether 4G** has been activated and the 4G network function of the mobile phone has been turned on;

2. Whether the mobile terminal supports mobile 4G network;

3. Whether the current location has mobile 4G network coverage;

4. Whether the mobile phone number card is a USIM card.

Not all 5S support 4G network, and the absence of a 4G network switch indicates that the version does not match.

U.S. version 5S: There are locked versions and unlocked versions, there is a lock that needs to add a card to use normally, and there are SMS and ** network and other setting problems, can not be upgraded at will, there is a lock card can only be connected to the mobile 2G network.

The full-price S version (bare metal) purchased at Apple's official retail stores is unlocked.

The full-price machines purchased at the Sprint Radioshack Target Walmart Bestbuy are still locked.

Note to users in the United States: The Sprint version uses the UICC SIM card of a special Sprint operator, which is different from the SIM card of other operators!

The phone and the UICC SIM card are always detected and paired, and it can only be the SIM card of Sprint!

U.S. domestic users (non-international users) can only use Sprint, even if you are unlocked.

If you cannot use the 4G network of China Unicom, we recommend that you use the following conditions to troubleshoot the 4G network:

Use China Unicom 4G** or have opened 4G network function;

The mobile terminal supports China Unicom 4G network;

The location has a 4G network covering China Unicom;

The number card is a USIM card.

You can check whether the above conditions are met, and you can only use the 4G network after you meet them, if you still can't use the 4G network after eliminating them, it is recommended to consult the local Unicom customer service to check whether the base station facilities are faulty.

Hello landlord! Generally, after the mobile phone searches for the operator's network and logs in, a "3G" or "4G" switch will be displayed below the cellular mobile data, according to the ** provided by the landlord, your mobile phone number card has not searched for the network, so the operator name is not displayed, please take out the card currently placed in the mobile phone, put it in again and try again.

Can't put, 4G network fruit 6 can.

You can use a mobile 4G card, but you still use 2G and 3G networks.

Usage status of iphone5s model:

1. iPhone 5S (A1518 version): This version is customized for China Mobile, supporting mobile 2G, 3G and mobile 4G. China Unicom 3G and 4G are locked.

2. iPhone 5S (A1528 version): This version is customized version for China Unicom, which supports China Unicom 2G and 3G; Mobile 2G. After the upgrade, you can turn on the 4G option, but you can't enter the mobile 4G network.

Locked mobile 3G. Suitable for China Unicom users.

3. iPhone 5S (A1530 version): This version is the Apple bare metal version, which is used to replace the previous A1528 bare metal version, which is equivalent to A1518+A1528 in layman's terms. Support mobile 2G, 3G, 4G; China Unicom 3G.

This version is suitable for mobile and China Unicom users.

4. iPhone 5S (A1533 version): This version supports telecom 2G and 3G.

The U.S. version only supports mobile 2G and China Unicom 3G