How to Operate eSIM on Dual SIM phone?

An eSIM is a digital SIM that lets you activate a cellular plan without a real nano-SIM. The iPhone 13 Pro Max, 13 Pro, 13 mini, and 13 mini all support Dual SIM with two active eSIMs, or a nano-SIM and an eSIM. In addition to the dual SIM, Apple's iPhone 12 and 11 have a nano-SIM and an eSIM.

 

What is Dual SIM?

• Use two separate numbers for business and personal calls.
• When travelling abroad, add a local data plan.
• Keep voice and data separate.
• Both phone numbers may make and receive audio and Face Time calls, as well as SMS and MMS messages.
• An iPhone can only use one cellular data network.
• To use 5G with Dual SIM on an iPhone 12, 12 mini, 12 Pro, or 12 Pro Max, you must have IOS 14.5 or later.

Need for Dual eSIM iPhone

• IOS 12.1 or later is required for the iPhone XS, XS Max, or XR.
• ESIM compatible wireless carriers
• Your iPhone must be unlocked to use two carriers. They must be from the same country. Your second SIM won't work if your first SIM is CDMA. For further info, contact your carrier. If you have a business or corporate mobile phone plan, ask your administrator if this feature is supported.

Set up your eSIM plan.

2 phone numbers.

Dual SIM status icons:

• Change to cell phone data number
• Set up your cell phone:
• Delete eSIM

 

Set up your eSIM plan

On the iPhone 13 Pro Max, 13 Pro, and 13 mini, you can use two eSIMs for two or more cellular plans, or a physical nano-SIM for one plan and an eSIM for another.

On the iPhone 12, 11, XS, XS Max, and XR, you can utilise a physical nano-SIM for one plan and an eSIM for another. An eSIM can replace a nano-SIM if your carrier supports it. Your carrier's eSIM is digitally stored on your iPhone.

 

Here's how to Setup eSIM on iPhone?

The iPhone can contain many eSIMs, but only one can be used at a time. To change eSIMs, go to Settings, select Cellular or Mobile Data, and then select the plan. Then hit this line.

Set up a plan.

Set up your second plan and label it. For example, call one plan "personal" and the other "business." You'll use these labels to choose the phone number to use for calls, texts, and data, as well as to assign numbers to contacts.

If you change your mind, go to Settings, touch Cellular or Mobile Data, then tap the number you wish to change. Then hit Cellular Plan Label and create a new label. 

The image depicts the default line selection.

Set a default value

Pick a number to contact or text someone who isn't in your Contacts app. Choose which cellular plan to use for IMessage and Face Time. IOS 13 and later allow you to choose both numbers.

On this screen, you can set a default number or a number just for cellular data. The other number is the default value. Allow Cellular Data Switching allows your iPhone to use cellular data from both plans based on coverage and availability.

Telephones, text, and data use two numbers.

 

Here's how to use your iPhone's two phone numbers.

• Contact info image with phone number. 
• Keep track of your iPhone's contacts.

1. When calling one of your contacts, you don't have to pick a number every time. Your iPhone automatically dials the same number you used to call that contact. It uses the default number if you haven't called that contact. You can also choose which number to contact. Steps to take:

• Tap the name.
• Choose a cellular plan.
• Tap the contact's number.
• Make a call and receive it.
• Either number may make and receive calls.

1. With IOS 13 and later, you can answer incoming calls on your other phone number if your carrier enables Wi-Fi calling. To accept calls from your other line while on a call using a non-cellular data line, you must enable Allow Cellular Data Switching. A missed call notification will be sent to you if you ignore the call and your carrier has voicemail set up. Check with your carrier if Wi-Fi calling is available and if there are any additional fees or data consumption. Your carrier either doesn't offer Wi-Fi calling or you haven't enabled it.
2. There is no cellular data switching enabled.If you have voicemail set up with your carrier, an incoming call on your other phone number will go to voicemail.
3. Your secondary number will not notify you of missed calls. Call Waiting works for the same phone number. Use call forwarding to ensure you don't miss an essential call. Check with your carrier for availability and costs.

The primary number is near the top.

Caller ID switch for a call

You can change phone numbers before calling. If you want to call someone on your Favorites list, do this:

• Select the "Info" button.
• Tap the phone number.
• Tap the others.

 

If you're using a keypad, do this:

• So, what's up?
• Tap the phone number near the screen's top.
• Tap the desired number.

IMessage and SMS/MMS

You can send messages to either number using IMessage or SMS/MMS.

1. You can use a number before or after a call. How? 

• The image indicates the conversation number.
• Before sending an iMessage or SMS/MMS, pick a number.
• Tap the "New" button in the top-right corner.
• Please identify your point of contact.
• Tap the phone number.
• Tap the desired number.
• Changing numbers during a talk.
• Changing numbers during a call.
• Tap your phone number near the top of the screen.
• Pick a different number instead.

Dual SIM status icons:

The icons in the top status bar represent the strength of your two carriers. Learn the status icons.

• The Control Center shows more status icons.
• Carrier 1 is in use.
• In this case, the other line shows "No Service."
• The Wi-Fi device depicted in the image
• There is Wi-Fi connectivity, and Carrier 2 is using Wi-Fi Calling.
• Carrier 2 uses cellular data.
• With Allow Cellular Data Switching enabled, the status bar shows Carrier 1 utilizing 5G and Carrier 2 using Carrier 1's cellular data and Wi-Fi calling.
• Change to cell phone data number

Mobile data is limited to one number. Steps to modify which number uses cellular data:

The image indicates the primary cellular data number.

• Setup
• Choose between cellular and mobile data.
• Tap Cellular.
• Tap the cellular data number.

In this case, when on a phone call, the number automatically converts to voice and data.

• While on a call, you can use both voice and data.

If you disable "Allow Cellular Data Switching" and are on a phone call, cellular data won't operate while you're on the call.

Steps to enable Cellular Data Switching:

Setup eSIM on iPhone:

• Choose between cellular and mobile data.
• Tap Cellular.
• Enable cellular data switching.
• Screenshot of cellular data settings
• Set up your cell phone:

Change your cellular settings for each plan as follows:

Setup eSIM on Android:

• Choose between cellular and mobile data.
• Tap the desired number.
• Set each option as usual.

 

What to do if you can't set up or use your eSIM?

1. eSIM on the iPhone is not available in China. Both the iPhone 13 mini and the iPhone 12 mini have eSIM in Hong Kong and Macao. This guide will teach you how to use Dual SIM with two nano-SIM cards in China.
2. DSDS (Dual SIM Dual Standby) technology allows both SIMs to make and receive calls.
3. Upgrade your IOS from IOS 12 to IOS 13 or later to receive calls from your alternate number.
4. Visual Voicemail and MMS are disabled on your voice-only line if data roaming is enabled for the cellular phone.
5. Extra charges may apply. Consult your carrier.
6. During your call, your data line automatically switches. If you're using data roaming, this won't work. Check with your carrier for availability and costs.

          https://www.airhubapp.com/esim/Local-eSIMs