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In addition to the introduction of new iPad Pros and Macs, we also saw the release of a new operating system last night. iOS 12.1, which brings to the new iPhones XS, XS Max and XR support for eSIM, thanks to which it will now be possible to use two numbers on these models. So let's take a closer look at this new feature and tell you how to set it up.

All iPhones introduced this year and even the iPad Pro introduced yesterday were introduced with eSIM support. However, now we will mainly focus on iPhones and the eSIM functionality in them. But first, we should clarify what exactly an eSIM actually is. eSIM can be described as a digital SIM card or, if you prefer, a chip that is implemented directly in your iPhone or iPad and is able to replace a classic physical SIM card. The only thing you have to do for its functionality is to upload a tariff from your operator to it. After that, you can use the phone exactly as you were used to even with a physical SIM card. 

You can use an eSIM both if you only have one number and if you need two numbers. The operator will easily transfer the number from the physical SIM card to an eSIM at any branch. However, since it currently only supports T-Mobile in the Czech Republic, it is clear that for its functionality it is only possible to use its services. 

If you have two numbers, you can also get them on your phone very easily. One number is provided by the physical SIM inserted into the slot, and the second is provided by the eSIM, which you can arrange with T-Mobile and later with other Czech operators. If you were switching from a competitor to T-Mobile because of the eSIM and would like toonechat your original number, you will proceed exactly as when numbers were transferred between operators even in the days of physical SIM cards. However, from my own experience I can tell you that fortunately it is nothing terrible and everything is taken care of maxideally through a few phone calls. If you are bound by certain tariff contracts, porting your number may of course be more complicated. 

If you've ever come across Dual-SIM phones in the past, you should know that iPhones work in a very similar way. For both numbers, you can set what you want to use them for or label them as, for example, work or personal. It is not a problem to set, for example, one tariff only for calls and then have the other equipped for mobile internet. Apple However, it warns on its website that at some point it may iPhone always use only one mobile data network. For example, if you were to call from an eSIM and want to write a message from the physical SIM during the call, you would be out of luck. The same applies if you were to call from one SIM and someone tried to call you on the other at the same time. In this case, their call will be redirected to voicemail or marked as busy. 

Using eSIM also makes a lot of sense for travelers who are used to using the services of foreign operators. In this case, they can use their “parent” physical SIM of the Czech operator in their phone withoutchat and deactivate it and then load the local operator's tariff onto the eSIM. This eliminates the annoying switching of SIM cards.

How to activate eSIM 

Activating an eSIM is really simple, but you can't do without contacting your operator. He will provide you with either a QR code or the necessary data, which will then be used to fill in the necessary data. You enter the tariff for eSIM in Settings – Mobile data – Add mobile tariff, where you then proceed according to the instructions. However, you can easily set the eSIM tariff through the applications of the operators, who, of course, must have eSIM support in the menu and their application updated. Either way, the setup is very simple. However, as I wrote in the introduction, a new iPhone update to iOS 12.1 and have an internet connection. 

After inserting the tariff via eSIM, the above-mentioned eSIM label is waiting for you, which should be used for your better orientation. You can choose a label from the pre-made ones, and of course you can also create your own. The tariff designation can be changed later through the settings. 

The next step is to set what services you require from the eSIM number. So you set the default number for iMessage, FaceTime, calls, messages or data. 

You will have a total of three options to choose from: 

Use as the default line Primary (or otherwise marked with a label): When you select this option, the primary line will act as the default for voice, SMS, data, iMessage and FaceTime. The secondary line will be available for voice and SMS only.

Use as the default line Secondary (or otherwise marked with a label): If you select this option, the secondary line will be used for voice, SMS, data, iMessage and FaceTime. The primary line will be available for voice and text messaging only.

Use the Secondary line (or otherwise marked with a label) only for mobile data: This option can be useful when you are traveling abroad and want to have a primary line foronechat for voice services, SMS, iMessage and FaceTime. You can then use the secondary one for data.

Of course, you can still adjust the eSIM settings according to your personal preferences. For example, if you only want to call from a physical SIM but you have to handle one call via an eSIM, this option can be set for individual contacts. Of course, it is just as easy to reset the sending of SMS and MMS messages, where when writing a message you can very easily choose from which number it should be sent. If you start using two SIMs, both will start to appear in the top status bar, so you can easily check their signal. If you then need to deactivate one number, you can do so in Settings - Mobile data. 

eSIM in new iPhonech really offers a lot of very useful options that will make life much easier for many of us. Hopefully we will see support from O2 and Vodafone soon.one, which eliminates the need to worry about number transfers or similar problems. If you are interested in specific information directly from T-Mobile, visit his site.

dual SIM iPhone XS

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