Dual SIM version Galaxy S8 và S8+ allows you to lớn use two SIM cards in the phone. Although Galaxy S8 và S8+ are dual standby only, you can use dual SIM always on và will not miss any calls.

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This Galaxy S8 guide explains the limitations of using two SIM cards in Galaxy S8 and S8+, how lớn use & customize dual SIM thẻ settings, how to enable dual SIM always on khổng lồ avoid missing calls.

When you can use two SIM cards in Galaxy S8 and S8+?

In many international markets, Samsung released dual SIM version of Galaxy S8 và Galaxy S8+.

For these dual SIM Galaxy S8 and S8+, you can use up lớn 2 SIM cards. Of course, they are dual standby only, not dual active because there is one modem shared by two SIM cards.

You can use two SIM cards only in dual SIM version of Galaxy S8 and S8+.

As explained in the Galaxy S8 SIM card guide, the SIM card tray for single SIM & dual SIM version of S8 and S8+ is different.

But the difference is not only in the SIM thẻ slot. The firmware (software) is also different.

In addition, the metal contact part inside the phone is also different in dual SIM version & single SIM version of Galaxy S8 and S8+.

So, there is no easy way khổng lồ convert single SIM version of Galaxy S8 or S8+ to lớn dual SIM version. Don’t waste time and money on this.

What are the limitations of using two SIM cards in Galaxy S8 and S8+?

As dual SIM version of Galaxy S8 or S8+ is dual standby only. In theory, two SIM cards are both active only when the phone is in standby.

This means you can receive & make calls on both SIM cards, but not concurrently.

When you are engaged in a gọi with one SIM card, the other SIM card by mặc định will be unreachable.

However, you can set hotline forwarding from one SIM thẻ to the other one, và enabling gọi waiting khổng lồ get “dual SIM always on” (read on).

In short, the limitations of using two SIM cards in Galaxy S8 and S8+ include:

Dual standby only;Only one SIM thẻ can be assigned lớn use di động data. By default, it is SIM thẻ 1.Most carriers will charge hotline forwarding minutes if you want to make both SIM cards available at any time even when you are engaged in a call.Dual SIM always on may be not available in a few carriers’ networks who do not support call waiting (call holding).Mobile data tốc độ may be affected when using two SIM cards.

How to use two SIM cards in Galaxy S8 & S8+?

As explained in Galaxy S8 SIM card, you can put two SIM cards in the SIM card tray.

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Because slot 2 is for either a SIM thẻ or a SD card, you will not be able to lớn use micro SD thẻ when using two SIM cards in Galaxy S8 và S8+.

You just need follow the guide to lớn put two SIM cards in the tray & they should be recognized after you power on your Galaxy S8 or S8+.

Although it is not required, you should power off Galaxy S8 & S8+ before adding or replacing SIM card.

How to know whether you are using two SIM cards in Galaxy S8 & S8+?

If both of the two SIM cards are working, you will find some additional status icons as shown below.

For example, as shown below, you can find two signal strength bar (marked as 2 và 3 in the screenshot), instead of 1.

SIM thẻ 1 icon (marked as 1) indicates mobile data is activated on this SIM card.


In SIM card status page, you can find two tabs: one for SIM 1 and the other for SIM 2.

You can kiểm tra the smartphone network info including:

Network. This should be your carrier’s network name.Mobile network type.Service state.Roaming.Mobile network state. This is the mobile data connection status. It is connected only when data are transferred.

Do you know how khổng lồ use two SIM cards in Galaxy S8 & S8+? Can you phối dual SIM always on?

If you have any questions or encounter any issues with using two SIM cards in Galaxy S8 and Galaxy S8+, please let us know them in the comment box below.

The community will help you find the answer or solution.

You may also kiểm tra our Galaxy S8 guides:

In addition to post your thought or questions in the bình luận box below, you can also reach us in Facebook page.

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