How to set up the SIM card in Android

SIM cards and mobile networks

Almost all Xiaomi phones support the work of 2 SIM cards simultaneously. In this article we will review all network and internet (data transmission) settings for each SIM card. Here we go.

All options are here: SIM and Mobile Network Settings.

When your phone has 2 SIMs working at the same time, you will see two cell signals at the top (next to the charge level). For each SIM card, you can configure the mobile network and data usage (hotspot).

Selecting any SIM, we get to the settings menu, where the following options will be available:

card, android
  • Turn on the SIM card. If you do not use this SIM card for a long time and do not receive SMS and voice calls on it, you can disable it to save battery power.
  • SIM card name. Specify any name to avoid confusion with the second one. write the name of the operator.
  • SIM card number. A handy option if you forget your phone number.
  • Access points (APN). what access point the SIM-card uses to access the Internet and receive MMS-messages. These settings come in when you first insert the SIM card in the phone, and are set automatically. No need to change anything. Or you can manually add an access point.
  • Preferred type of network: 4G (LTE), 3G or 2G (calls only, no internet, to save energy).
  • Mobile networks. Choose the network automatically or manually. I recommend automatically, especially if you are roaming. the most “friendly” and inexpensive operator. Experienced users can choose the manual mode, in this case, in roaming, they take all the risks (can “get” the expensive tariff at another operator). For example, in manual mode, apart from my Beeline network, other networks are available, but not the fact that I can connect to them: MTS 4G, Tele2, Megafon 4G.

SIM card settings

Each SIM has its own settings in the manager: enabled/disabled, icon to identify (SMS, Internet, work, home, SIM 1, SIM 2), name and network mode. I do not recommend to change any settings if you don’t know them.

  • SIM card is on. You can turn off your SIM card (first, second or both at once. doesn’t matter) to save battery power, not to receive calls and if you’re flying in an airplane.
  • Icon for SIM 1 or SIM 2. Use only these icons not to get confused later.
  • The name of SIM. write the name of the operator to avoid confusion.
  • LTE/3G/2G network mode (auto). In some smartphones the second SIM can work only in 2G mode (calls and SMS. without internet). 3G. calls SMS internet. LTE (4G). high speed internet calls SMS.

REFRESH FEEDBACK PAGE Author:Alesya 23-07-2021 21 hrs. 31 min.Message:On the Meizu m5 Note,go to the call log,press and hold on the person you want to call,a window appears and offers which simcoe to use the first or second. Author:Garik 02-06-2021 22 hours. 32 min.Message:Thank you. Immediately made. Usually after rebooting asks. Author:Ivan 25-02-2021 21 hr. 50 min.Message:I have a Huawei y5 Lite 18g does not set the shit so that before the call to select the SIM

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REFRESH FEEDBACK PAGE Author:Elena 09-04-2020 11 hr. 21 min.Message:Actual on Prestigio Grace V7 LTE, thanks!

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Besides it is not always possible to remember to which, i.e. to the account of what important, but seldom used service the phone is attached and, correspondingly, where else the problem may arise when you change the sim card format. True, the existence of such sensitivity to the size of the SIM card still depends on the specific bank and on specific services. Perhaps as technology advances this problem will go away.

It’s necessary to do this in order to receive calls on only one or simultaneously on two simkas, as well as to be able to access the Internet from the selected simkas, as well as distribute Wi-Fi.

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The Android phone is essentially a small computer, so many computer approaches apply to it. Namely, the configuration of the sims is hardware and software (hardware software).

For example, if you turn on only one SIM on your phone programmatically, i.e. make it active, and leave the second one inactive, but do not turn it off by hardware, then you will see a circle with a crossed out circle on your phone. This icon means that the phone has two SIM cards, but one of them is empty, or rather, it is absent in the phone.

Screenshots are made on a Samsung Android phone and the settings are described for this model.

There are still SIM cards of old design with big chip, it is difficult to turn such a card even into micro-SIM, and into nano-SIM almost impossible because of the big size of the chip itself.

REFRESH PAGE WITH REVIEWS Author:Anton 13-08-2021 11 hours. 17 min.Message:Ssps. Andrew a lot! There’s a damn tray that calls for a dual SIM1 and SIM2 are inserted into the tray on one side and the other side. Thanks again sorted it out, fudge first time I see such a patch for SIM cards. Author:Andrew 11-08-2021 19 hr. 42 min.Message:This is what it says in the specifications of the Galaxy S21 Ultra 5G on the official Samsung website: Number of SIM cards Dual-SIM. Nano-SIM (4FF) SIM card size, Built-in SIM card. SIM Slot Type SIM 1 SIM 2 or Electronic SIM. Author:Anton 11-08-2021 14 hr. 19 min.Message:I’m sorry, I may be an idiot guys but the Samsung galoxi S21 Ultra has a slot for a second SIM card? Or is it like “SIM 1 slot”. it could be for virtual number? And guys? Author:Andrew 08-08-2021 09 hr. 20 min.Message:Anton, maybe on the phone the sim card is installed in the slot for the second SIM card. Author:Anton 07-08-2021 22 hrs. 55 min.Message:Greetings all! Guys, do not tell me and I have this problem: Why in the smartphone Samsung S21 Ultra SIM card is displayed as SIM 2, not as SIM 1? Thanks in advance. Regards, Anton! Author:volodymyr 20-07-2021 01 hr. 42 min.Message:delete a contact, but it is in the phone book is not removed, just wrote the name and all, is not removed, what to do? Author:Daria 12-07-2021 07 hr. 03 min.Message:Scooter Author:luba 30-03-2021 22 h. 32 min.Message:After updating software in A-50 disappeared function when choosing which SIM to call, although I set “always ask” and sims are active Author:Daria 26-03-2021 12 hr. 15 min.Message:After updating software in March 2021 disappeared function when choosing which SIM to call, although I set “always ask”, have to first disable the other SIM, and then make calls. Very uncomfortable. The article was not helpful, alas( Thank you. Author:Guest 02-02-2021 11 hours. 19 min.Message:Nice article. Helped. Thanks. Author:Igor 16-11-2020 12 hr. 38 min.Message:Samsung A40 to make a call, you need to select a subscriber in the phonebook, click on it, and then select the SIM card from which you want to make a call how to make calls with the priority card ? I used to have an A3 300 from the 15th year. Never had such a problem, called directly from the priority sim. Author:Andrew 04-04-2020 16 hr. 24 min.Message:Diana, on new Samsung smartphones try this: settings / network and internet / SIM cards / phone calls or phone calls / always ask Author:Diana 04-04-2020 16 hr. 12 min.Message:What if the phone does not have a SIM card manager Author:Marina Pokydina 18-03-2020 11 hr. 16 min.Message:Thank you, it worked. Phone now asks which SIM card to call from. Samsung j7 Author:Raisa 30-10-2019 13 hr. 31 min.Message:Got it.Thank you so much! Author:Sergey 15-10-2019 14 hr. 13 min.Message:Thank you! Got it. Author:Gennady Pavlovich 14-10-2019 6 p.m. 30 min.Message:Thank you so much. Author:Ilyina Natalya 18-09-2019 11 hr. 59 min.Message:Hello! In the android options you can also select the desired SIM of the two from which the call will automatically originate. Could you tell me how to do it. Author:Lola 10-08-2019 09 hr. 59 min.Message:Sp!Thanks. Yay!! Author:Anaholi 07-05-2019 11 hr. 50 min.Message:I have no item “SIM card manager” Huywei smartphone lite 20 Author:Andrei 21-04-2019 02 hrs. 54 min.Message:On Honor 7a I can’t switch to call from the first SIM card. Always started calling with the second one, hint Author:Amina 24-03-2019 13 hrs. 04 min.Message:Thank you so much. You are very helpful Author:SOVA 24-02-2019 16 hr. 20 min.Message:Thank you very much) got it)))) Author:Valentina 05-01-2019 18 hr. 16 min.Message:Friends my husband has S9402Samsung phone and we can’t set up SIM card switching. Help. Author:Valentina 05-01-2019 18 hours. 08 min.Message:Thank you so much. Very well explained, everything worked out Author:Mado 30-12-2018 08 hr. 45 min.The message:I do not know what happened, is it because of a software update can. But I can not select SIM for the call now. used to set it that way. As you described, but now it’s not there. Pissed off with these updates.how to be ? Author:Ludmila 01-11-2018 23 hrs. 31 min.Message:Good evening! Thank you. Author:Marina 24-09-2018 21 hrs. 11 min.Message:Thank you. Very accessible. Author:Irina 10-09-2018 10 hr. 47 min.Message:Thank you so much for your help, quickly solved my problem Author:Ludmila 30-08-2018 23 hr. 07 min.Message:good night! Great five, everything is clear and accessible. Author:Danielle 09-08-2018 13 hr. 18 min.Message:Thank you, very helpful! Author:victoria 01-08-2018 12 hr. 41 min.Message:Thank you for these tips. Author:inga 26-07-2018 11 hrs. 01 min.Message:thank you for your help) Author:Alexey 02-07-2018 11 hrs. 15 min.Message:Thank you, the information is relevant to all android and not only Samsung. Thank you. Author:Petr 24-06-2018 13 hrs. 39 min.Message:Dick you guessed it worked that way before the software update to 6.0.1 on A 8, now when you turn it on it always asks, you don’t call from any card Author:Julia 20-06-2018 10 hours. 12 min.Message:Thank you, the information helped to understand the settings. Author:Valentina 18-06-2018 13 hours. 41 min.Message:Thank you very much.Very helpful. Good luck. Author:Evgeny 15-06-2018 19 hr. 12 min.Message:How to regain access to send SMS, for short numbers (four digits)?If earlier the number was blocked when trying to send an SMS.By randomly clicking in the window,when prompted by the system. Author:Vladimir 30-05-2018 02 hr. 53 min.Message:Thank you Author for such recommendations, you have helped a lot as we thought already to carry to repair. Because I called from the first SIM, and the second did not dial. Thank you so much for this. Pensioners of Moscow! Author:Nikolay 23-05-2018 10 hr. 25 min.Message:Thank you for this useful information. Very helpful. Author:Alexander 16-05-2018 10 hr. 09 min.Message:Thank you so much for helping me set up a call with 3 sim cards. It used to work and then all of a sudden it’s gone. Now it’s ok! Author:Irina Tretiakova 06-05-2018 09 hr. 50 min.Message:Hello.My SIM selection window is gone when I make a call.The call comes with only one SIM.How to get back the SIM selection window? Author:hopeKudryashova 01-05-2018 13 hours. 03 min.Message:Thank you so much for making the information available. Good luck to you and happy May Day! Author:Sergey 23-04-2018 20 min. 19 min.Message:Thank you very much. Now everything is clear. Author:Vitaly 21-04-2018 07 hr. 10 min.Message:Thank you very much. Now offers a choice of SIM cards. Author:Alexandra 18-04-2018 13 hr. 01 min.Message:Thank you, you have helped me Author:Maxim 05-03-2018 15 hrs. 06 min.Message: How do I make it so that a certain phone number, for example Vodafone, can be called immediately from a desired connection?? s8 Author:Alesya 17-02-2018 19 hours. 06 min.Message:Thank you very much, this information helped me a lot! Author:Ruslan 14-02-2018 19 hr. 33 min.Message:I see. Author:Tina 19-01-2018 07 hr. 35 min.Message:Thank you so much for your help. Everything worked out))))) Author:BorIs johnson 17-01-2018 17 hr. 25 min.Message:A BIG THANK YOU Author:Ali 14-01-2018 20 hr. 21 min.Message:wake up, can’t get the SIM card selection off in time dialing on Samsung s8. in the manager SIM card assigned SIM 1 by default, anyway in time dialing both SIM cards are displayed Author:Marina 11-01-2018 18 hr. 25 min.Message:Thank you very much! Very helpful and it took me half a day to find out how to configure it Author:Author Julia 02-01-2018 23 hr. 56 min.Message:Thank you, the setup worked. All the best to you. Author:Archy 01-01-2018 15 hr. 46 min.Message:Thank you! Very useful information. Author:Svetlana 27-12-2017 22 hrs. 55 min.Message:Yay, it’s working. the code says “enter the sum of the numbers” and the example is the difference. Author:Irina 23-12-2017 21 hrs. 25 min.Message:People, who knows. There is an app on your Android phone. The numbers and person data are saved there as well. How do I make it in the app so that it gives the choice to call again. Via vyber,phone,WhatsApp. They used to offer me what to call through, now they don’t. How to return it to give the choice again? Author:Albert 20-12-2017 12 hrs. 52 min.Message:Thank you very much. Helped a senior citizen. Author:Denis 12-12-2017 4pm. 18 min.Message:Thank you! Author:Olga 29-11-2017 14 hrs. 59 min.Message:Thank You. It all worked out Author:Yegor 22-11-2017 12 hr. 17 min.Message:for some reason the settings are reset. That is, I have two sims, 1 slot mts, 2 beeline. I go to the settings, in the calls always ask. I have tried to use the reset button on my phone to reset the SIM card of my phone, it will not go slower, but it will not disappear anymore and it will work all the time. I look at the settings and instead of always asking again it is mts. What’s the trick? Author:TATYANA 20-11-2017 20 hrs. 01 min.Message:THANK YOU. Author:Andrei 30-10-2017 13 hrs. 08 min.Message:Thank you! Finally, there was no time to figure it out and it was not clear. Author:LOL 29-10-2017 17 hr. 08 min.Message:Thank you Author:Igor 18-10-2017 18 hours. 15 min.Message:Good evening, the information is useful. But need your help with another setup. Samsung Galaxy S7, how to set the SIM card selection to be like on older models. I select SIM card first and then call. The outgoing call is always with the SIM which is now on, but if necessary, at the top of the screen you slide the curtain down and switch the SIM card and the call comes from the second SIM card.In my car Bluetooth, on the screen, pressed the desired contact and there is a call, and now I have to take the phone in your hand and select the SIM card which is offered. Please help with the phone settings. Thanks. Author:Vitaly 28-09-2017 22 hr. 22 min.Message:THANK YOU. Author:Nina 13-09-2017 12 hr. 16 min.Message:Thank you! Author:Victor 12-09-2017 19 hr. 02 min.Message:Thank you! Very helpful information. Author:Paul 10-09-2017 12:00 p.m. 25 min.Message:Thank you Author:Oksana 08-09-2017 08 hr. 30 min.Message:Thank you so much! It all worked. Author:author 30-07-2017 19 h. 39 min.Message:thank you! It worked fine! Author:Svetlana Vasilyevna 30-07-2017 19 hours. 37 min.Message:Thank you very much for the accessible information. Author:Vyacheslav 22-07-2017 17 hr. 29 min.Message:Thank you! It all worked out. 🙂 Author:Natalya 14-06-2017 11 hr. 50 min.Message:Thank you for the clear and accessible information! It all worked! Author:Anna 26-05-2017 12 hours. 07 min.Message:Thank you very much, thanks to you I have mastered dialing with the second SIM card on a Samsung smartphone.

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How to check the status of SIM-cards

To check the status of inserted cards and view information about their work, you must go to settings. Swipe down to open the notification curtain. Clicking on the gear icon.

We go to the “System” section. It is at the bottom of the list after the other parameters.

In the new menu select “About phone” write the phone number, if it is known by agreement with the operator. View the status of the SIM card and the defined IMEI code.

Clicking on the status will show detailed information:

It may be needed in case of loss of the cell phone or technical maintenance of the device.

What we do

This important setting is very simple. You just need to show the phone which of the networks it needs to connect to in a particular area and hold on to that connection. So, to do this, we have to:

  • Enter the settings menu on your phone;
  • Enter the tab, which is called “Mobile networks”;
  • In this window there is a setting called “Network Mode”. As a rule, the phones have the “Auto-connection to the network” mode. Just because of this setting the connection to the Internet and disappears;
  • We are left to set the connection to 4G connection, let the phone connect to 4G, not bouncing among different connections.

After making this setting, the phone will start treating 4G perfectly, and will stop connecting to a new network every time. Therefore, the connection to the Internet should become permanent and the smartphone will no longer reconnect.

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Of course, this setting is relevant in the place where the 4G network has extensive spaces with your operator. But if there are difficulties with connection, then it is desirable to switch to 3G in a constant mode until 4G becomes more extensive. Of course, the connection to the Internet will become slower, but it will no longer disappear, but will work all the time.

Conclusion:. If you see that the work of the Internet often disappears, you can not doubt that you need to configure the SIM card in your phone. Besides, if you do not observe such failures with the Internet, it is still better to make this setting, just in case. Good luck!

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