How the 2 SIM Mode Works on the iPhone Xs Duo?

This article gives a clear answer about How the 2 SIM Mode Works on the iPhone Xs Duo. It explains the main idea, practical context, and details that help readers understand the subject.

Understanding How the 2 SIM Mode Works on the iPhone Xs Duo

The newly launched trio of iPhone Xs, Xs Max and Xr are the first three iPhones to support 2 SIMs. However, it seems that this feature of Dual SIM of Apple may cause users to be disappointed.

Dual SIM classification

Currently we have 2 types of Dual SIM:

• 2 physical SIM as usual
• 1 physical SIM + 1 eSIM (electronic sim card can activate services via QR code, not physical sim card from network).

Currently, in addition to two global providers, GigSky and Truphone, only 14 operators in 10 countries support eSIM. But in the future there will certainly be many operators around the world supporting this new standard.

Note:

If your iPhone is a locked version, even if you are using the main SIM from CDMA-based networks, the second SIM will not support CDMA. Therefore, you must use the iPhone unlock if you want to use 2 different networks.

The operator will provide you with a QR code package to use eSIM. It can store multiple eSIMs at the same time but only one eSIM can be used at a time.

Currently, Apple only provides physical iPhone Xs or Xs Max 2 SIM versions like regular phones in China, Hong Kong and Macau markets. In Vietnam, there is no network that supports eSIM yet, so you will have to use the portable iPhone temporarily so you want to use the 2-SIM physical version.

The two SIM cards will basically lie on the same tray.

Dual SIM Dual Standby feature on iPhone Xs and Xs Max allows users to make and receive calls on both SIMs. But at a time, the iPhone can only connect data to a single network, so while a SIM is making a call, the calls to the remaining SIM will be transferred to voicemail.

Dual SIM on smartphone helps users to use a phone number for work, some for individuals, use extra data plan or use a sim for call list and sim for data.

Users can choose which SIM for calling and SIM for data.

For each number in the phone book, when making a phone call, it will automatically use the most recently called SIM. With a number that has never been called before, it will automatically use the default SIM. In addition, users can set the SIM to use for each specific contact in the phone book.

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