An e
SIM is a digital SIM that allows you khổng lồ use a cellular plan from your carrier without having to lớn use a physical nano-SIM. Learn how khổng lồ set up and use Dual SIM.1
How can you use Dual SIM?
Use one number for business and another number for personal calls.
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Add a local data plan when you travel outside of the country or region.
Have separate voice and data plans.
Both your phone numbers can make and receive voice and Face
Time calls & send & receive messages using i
Message, SMS, & MMS.2 Your i
Phone can use one cellular data network at a time.
If you want lớn use 5G with Dual SIM on i
Phone 12, i
Phone 12 mini, i
Phone 12 Pro, or i
Phone 12 Pro Max, make sure that you have i
OS 14.5 or later.
What you need
An i
Phone XS, i
Phone XS Max, i
Phone XR, or later with i
OS 12.1 or later
To use two different carriers, your i
Phone must be unlocked. Otherwise, both plans must be from the same carrier. If a CDMA carrier provides your first SIM, your second SIM won"t tư vấn CDMA. Contact your carrier for more information.
If you have an enterprise or corporate cellular service plan, kiểm tra with your company administrator to see if they support this feature.
Set up another cellular plan on your i
Phone
Use two phone numbers
Learn about Dual SIM status icons
Change your cellular data number
Manage cellular settings
Erase your e
SIM
Set up another cellular plan on your i
Phone
All i
Phone models that tư vấn e
SIM can have multiple e
SIMs & use Dual SIM with two active SIMs at the same time.
You can use Dual SIM by using a physical SIM và an e
SIM. I
Phone 13 models & later also tư vấn two active e
SIMs. I
Phone models without a physical SIM tray tư vấn two active e
SIMs.
Learn how khổng lồ activate a cellular plan on an e
SIM.
Label your plans
After your second plan is activated, label your plans. For example, you can label one plan Business and the other plan Personal.
You"ll use these labels when you choose which phone number to lớn use for making or receiving calls and messages, lớn designate a number for cellular data, and to assign a number khổng lồ your contacts so you know which number you will use.
If you change your mind later, you can change your labels by going to Settings, tapping either Cellular or di động Data, & then tapping the number whose label you want lớn change. Then tap Cellular Plan Label and select a new label or enter a custom label.
Set your default number
Choose a number to use when you điện thoại tư vấn or send a message khổng lồ someone who isn"t in your Contacts app. Choose which cellular plans you want to use for i
Message và Face
Time. You can choose either or both numbers.
On this screen, choose a number lớn be your default, or you can choose which number is to lớn be used only for cellular data. Your other number will be your default. If you want your i
Phone to lớn use cellular data from both plans, depending on coverage and availability, turn on Allow Cellular Data Switching.
Use two phone numbers for calls, messages, và data
Now that your i
Phone is set up with two phone numbers, here"s how khổng lồ use them.
Let your i
Phone remember which number khổng lồ use
When you gọi one of your contacts, you don"t need lớn choose which number to use every time. By default, your i
Phone uses the same number that you used the last time you called that contact. If you haven"t called that contact, your i
Phone uses your default number. You can also specify which number to use for your calls with a contact. Follow these steps:
Tap the contact.
Tap Preferred Cellular Plan.
Tap the number you want to use with that contact.
Make và receive calls
You can make and receive phone calls with either phone number.
When you"re on a call, if the carrier for your other phone number supports Wi-Fi calling, you can answer incoming calls on your other number. When you"re on a call using a line that isn"t your designated line for cellular data, you need lớn turn on Allow Cellular Data Switching to receive calls from your other line. If you ignore the call and you have voicemail mix up with your carrier, you’ll get a missed-call notification and the gọi will go khổng lồ voicemail. Kiểm tra with your carrier for Wi-Fi calling availability and find out whether additional fees or data usage applies from your data provider.
If you"re on a call & your other line shows No Service, either your carrier doesn"t tư vấn Wi-Fi calling or you don"t have Wi-Fi calling turned on.3 It could also mean Allow Cellular Data Switching is not turned on. When you"re on a call, an incoming gọi on your other phone number will go lớn voicemail if you set up voicemail with your carrier.4 However, you won"t get a missed-call notification from your secondary number. Call Waiting works for incoming calls on the same phone number. To avoid missing an important call, you can turn on điện thoại tư vấn forwarding và forward all calls from one number to lớn the other. Kiểm tra with your carrier for availability & to find out whether additional fees apply.
Switch phone numbers for a call
You can switch phone numbers before you make a call. If you"re calling someone in your Favorites list, follow these steps:
Tap the Info button
Tap the current phone number.
Tap your other number.
If you"re using the keypad, follow these steps:
Enter the phone number.
Tap the phone number, near the top of the screen.
Tap the number you want to lớn use.
Send messages with i
Message & SMS/MMS
You can use i
Message or SMS/MMS to send messages with either phone number.5 You can choose a number lớn use before or after you start a conversation. Here"s how.
Choose a number before you send an i
Message or SMS/MMS message
Open Messages.
Tap the New button, in the upper-right corner of the screen.
Enter your contact"s name.
Tap the current phone number.
Tap the number you want to use.
Switch numbers during a conversation
Tap the number you"re using, near the vị trí cao nhất of the screen.
Choose the number you want to use instead.
Learn about Dual SIM status icons
The icons in the status bar at the vị trí cao nhất of the screen show the signal strength of your two carriers. Learn what the status icons mean.
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You can see more status icons when you xuất hiện Control Center.
When Carrier 1 is in use, the other line will show No Service.
The status bar shows that the device is connected lớn Wi-Fi & Carrier 2 is using Wi-Fi Calling.
With Allow Cellular Data Switching turned on, the status bar shows that Carrier 1 is using 5G, và Carrier 2 is using the cellular data of Carrier 1 and has Wi-Fi calling enabled.
Change your cellular data number
One number at a time can use cellular data. To change which number uses cellular data, follow these steps:
Go to lớn Settings.
Tap either Cellular or mobile Data.
Tap Cellular Data.
Tap the number you want to use cellular data.
If you turn on Allow Cellular Data Switching, then while you"re on a voice hotline on your voice-only number, that number automatically switches khổng lồ use voice và data.6 This lets you use both voice và data while on the call.
If you turn off Allow Cellular Data Switching & you"re active on a voice number that isn"t your designated cellular-data number, then cellular data won"t work while you"re on the call.
To turn on Allow Cellular Data Switching, follow these steps:
Go lớn Settings.
Tap either Cellular or điện thoại Data.
Tap smartphone Data.
Turn on Allow Cellular Data Switching.
Manage cellular settings
To change your cellular settings for each of your plans, follow these steps:
Go lớn Settings.
Tap either Cellular or sản phẩm điện thoại Data.
Tap the number you want khổng lồ change.
Tap each option & set it as you normally would.
Learn more
This uses Dual SIM Dual Standby (DSDS) technology, which means that both SIMs can make & receive calls.
Or if you"re using i
OS 12, update lớn i
OS 13 or later khổng lồ receive calls when you"re using your other number.
4. If data roaming is on for the number that uses cellular data, then Visual Voicemail and MMS will be disabled on your voice-only number.
Additional fees might apply. Check with your carrier.
Your data line switches automatically for the duration of your call. This cellular-data switching won"t work if you"re currently using Data Roaming. Kiểm tra with your carrier for availability & to find out if additional fees apply.
When your phone displays this error, you cannot connect to lớn your wireless service provider"s network. This means you can"t use your wireless data over 4G or 5G, nor can you make or receive calls.
You"ll know your i
Phone is having problems with the SIM thẻ if your i
Phone warns you with an error message or the carrier name và the signal bars/dots at the vị trí cao nhất of the screen are missing or have been replaced with symbols. Message like No SIM or Searching.
What to bởi vì when your i
Phone shows "No SIM"?
How to fix i
Phone no SIM error
To fix the problem of i
Phone having no SIM, try the following:
Remove and check the i
Phone"s SIM
You need lớn remove the SIM and kiểm tra to see if the thẻ or slot is dirty or if the SIM is dislodged from its correct position. If the SIM is misaligned, put it back in, then wait a few seconds. The SIM thẻ not installed error will disappear and the usual bars & your carrier"s name will reappear at the top of the i
Phone screen. In case they are dirty, use a soft cloth and wipe them clean.
i
OS Update
Updating khổng lồ a new i
OS version can also help fix the phone showing No SIM issue.
Please check to see if there is a new version for the operating system running on your i
Phone lớn proceed with the update. Before doing this, please make sure your phone has enough battery và a stable Wifi connection so that the process will not be interrupted or errored.
Restart i
Phone
Perhaps the simplest and most commonly applied way lớn fix many problems including the display No SIM lad restarting the device. You will be surprised at how many problems are solved by rebooting.
Turn Airplane Mode On and Off
Turning Airplane Mode on & off can reset your i
Phone"s connection to the cellular network and may resolve the problem.
Check your SIM again
Besides problems caused by phone errors, another reason why the phone displays No SIM is due to the SIM. The simplest way to check if your SIM is damaged is to lớn insert a SIM thẻ from another sản phẩm điện thoại phone that you know works well.
If the No SIM thẻ installed warning disappears after inserting another SIM, your i
Phone SIM is damaged.
Repair, warranty
If you have tried all of the above methods but nothing works, what you need to bởi vì is liên hệ Apple technical support for guidance và help. Don"t try to lớn fix it yourself or the situation will get worse.
Above is an article on what to vì when your i
Phone displays "No SIM". Hope this knowledge will help you.
