Samsung S4 Telecom Edition Dual SIM Dual Standby Telecom Card Not Displayed Is Empty What s going on

Hello dear Samsung users:

1.Take out the SIM and clean the SIM card metal contacts with an eraser. (Whether it is a SIM card with poor contact).

2.Try to replace a SIM card (whether the SIM card is aged or damaged)3Check whether the phone has software such as Security Guard or Calendex installed, and try to uninstall it.

4.Back up your phone's data (book, SMS, multiple files, etc.) and restore factory settings.

If the problem persists, we recommend that you take your phone to the nearest Samsung service center for testing and repair.

It is recommended that you apply for "appointment to store" on Samsung's official website to enjoy priority repair services

After the appointment is successful, please bring your machine, invoice and warranty card to the service center where you made the appointment on time.

If it still doesn't work properly, it is recommended that you restore the backup data of your phone to factory settings (Settings --Reset --Factory Reset), or contact the Samsung service center directly to test the machine. Samsung Service Center Location Query:

See if the mobile phone manual is compatible with CDMA2000 card, if it is not compatible, it can only be like this, no matter how you try, it is useless.

Hello! Hopefully, the following will be helpful to you.

1.The mobile phone signal display speed is normal, and the registration speed of the telecom CDMA network itself is relatively fast.

2.You can turn off auto-brightness in the settings. The screen display effect of this mobile phone is very good, Android is very quick to use, and multiple operations are fine.

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You bury Li Hao:

According to your description, it is recommended that you try the following methods:

1. Take out the SIM card and wipe the SIM card chip.

2. Try to change the SIM card.

Test the card first, insert the card into another mobile phone, see if it can be used, if it can be used, in the test mobile phone, before inserting the card, wipe the card with a cloth, if it still doesn't work, take a look at the system settings, the previous Samsung 9900 was handled like this.

Hello dear Samsung users:

According to your description: S4 series phones include i9500, i9502, i9508, i959, i9507v, i9508v, where:

1.Samsung i9500 is a Unicom 3G single SIM phone, which supports Unicom 2G 3G network and mobile 2G network.

2.Samsung i9502 is a Unicom 3G dual SIM phone, card slot 1 supports Unicom 2G 3G network, mobile 2G network, card slot 2 supports Unicom mobile 2G network.

3.Samsung i9508 is a mobile 3G single SIM phone, which supports mobile 2G 3G network and China Unicom 2G network.

4.Samsung i959 is a telecom 3G dual SIM phone, card slot 1 only supports telecom cards; Card slot 2 only supports mobile cards and China Unicom cards. Note: Upgrade the official installation system and insert the mobile Unicom card to use the 2G network to access the Internet.

5.Samsung i9507V is a Unicom 4G single-SIM phone, which supports Unicom 2G 3G 4G network and mobile 2G network (4G function requires 4G card to be realized).

6.Samsung i9508V is a mobile 4G mobile phone that supports mobile 2G 3G 4G network and China Unicom 2G network (4G function requires 4G card to implement).

Comments, suggestions, complaints, please click:

Nope. Only China Telecom 3G and China Mobile China Unicom 2G are supported.

If you want to use 4G S4, it is recommended to buy the US version, which can use 3G and 4G of China Telecom and Unicom.

Or buy the S4 Pro that just came out, that is, the enhanced version of the S4, which supports Unicom 4G.

According to your description, the Samsung Galaxy S4 telecom customizer you consulted does not support 4G network,