How to switch the supplementary card to send text messages on the iPhone

1.Go to the SMS app and select the button in the upper right corner.

2.Next, enter the recipient's number.

3.Then click on the text bar below, and the dual-SIM switch button will be displayed on the interface.

4.Then click the button and select the sub number in the pop-up box.

5.After the switch is completed, select the input information content and click send.

Extended Information: Tips to Extend iPhone Battery Life:

1.Make it a good habit to recharge.

Charge the battery in time when the iPhone prompts a low battery to avoid automatic shutdown caused by too low a battery, and try to replace the battery if the battery efficiency is less than 80%.

2.Turn on Optimized Charging.

This function can intelligently learn and judge the user's usage and charging habits, so that the charging process is more balanced, thereby slowing down the aging of the battery and improving the battery life of the iPhone to a certain extent.

How to view: The "Optimize Battery Charging" function can be viewed in Settings - Battery - Battery Health

3.Disable background app refreshes.

Apps use battery life when running in the background. You can see how much time the app is running in the background. If an app runs out of too much power when it's not in use, you can disable background app refresh to prevent it from running in the background.

If the app is draining too much battery, we can also choose to uninstall it!

4.Enable Low Power Mode.

The "Low Power Mode" feature allows your phone to save more battery. When Low Power Mode is enabled, your screen dims slightly, restricting background processes, slowing down your processor slightly, or reducing the amount of energy your device needs during normal use.

How to do it: The easiest way to enable this feature is to swipe down from the top right corner of your iPhone and then the battery icon. Or you can enable the low power mode in Settings > Battery > Low Power Mode.

Push app notifications, email-read notifications, and more can all shorten battery life, so it's best to turn it off to make your iPhone last longer. Notifications can be turned off in "Settings" for each app.

For work needs, many people have bought an iphone11 that can be equipped with a primary and secondary card. But do you know how to switch the main and secondary numbers when sending text messages on the iphone11 mobile phone with dual SIM and dual standby? Let's take a look at how to switch the main and secondary numbers when sending text messages on the iphone11 phone.

1. Open the message program of iphone11 and click the compose icon to create a new message.

2. Enter the recipient's mobile phone number, or click the "+" sign after the recipient to select the recipient from the address book.

3. If the recipient's number is not in the address book, the current default SIM card will pop up when clicking on the SMS; If the recipient number is in the address book, the current default SIM card will pop up directly after selecting the recipient.

4. Click on the current default SIM card, and the secondary number and main number will pop up at the bottom of the screen.

5. If you select the secondary number at this time, it will switch to the secondary number to send text messages.

6. It should be noted that if it is a contact that already has a text message record, as shown in the figure below, you must delete the current text message record to switch the primary and secondary cards. If you don't want to delete text messages, then take out the SIM card that doesn't send text messages from your phone, and put it back when you're done texting.

iPhone supports dual SIM dual standby function, so sometimes when sending text messages, you need to switch the main and secondary numbersHere is how to switch iPhone dual SIM texting

1. First unlock iPhone XR and open Settings in as shown in the figure below.

2. Then find "Cellular" in the settings and tap on it.

3. At this time, in the cellular network, hit the beam to disturb the setting of Zheng Pei's two cards, and click on the two cards respectively.

4. Click on the data card, open the card, and click "Enable this number".

5. After the two cards are enabled, enter the SMS page. Find the place where the arrow points and click on the green box.

6. Click on the green box, then you will find that you can change the card used, select the supplementary card here, and you will be instructed to use the supplementary card to send text messages.

1. First open the settings in the desktop of the Apple phone, as shown in the figure below.

2. Then find "Cellular" in the settings, as shown in the image below.

3. Then in the cellular network, open the settings of the two cards and click on the two cards respectively.

4. Click on the data traffic card here, then open the card and click "Enable this number".

5. After the two cards are enabled, go to the SMS page, find the place pointed by the arrow, and click on the green box.

6. Click on the green book box, and find that you can change the card used, and select the supplementary card here, which means that you can use the supplementary card to send text messages.

A text message is a text or numeric message that is sent or received directly from a mobile phone numberThe following describes the steps of how to switch the primary and secondary cards when sending text messages on an Apple mobile phone.

1. First unlock iPhone 11, open the mobile app [Info] in it, and click the [] icon in the upper right corner.

2. Enter the recipient's number in the [To] field or click [Grip State Defense+] to add friends in the address book.

3. Then enter the text message you want to send below, as shown in the figure below.

4. After the SMS segment is missing, select the [Main and Secondary Cards] to send SMS, click [Send], and it will be completed as shown in the figure below.

Taking the Apple system as an example, the specific method of switching the main pin cavity auxiliary card when sending text messages on the Apple mobile phone is as follows:

1. First, open the iPhone phone, click the SMS icon, and open the SMS app;

2. After entering the SMS interface, click the button in the front corner of the upper right letter to create a new message;

3. After entering the recipient's mobile phone number, the current default SIM card will pop up.

4. Click the "Main Number" button, and the options of the main number and the secondary number will appear, and you can send it after switching.

Android phones. It has long supported dual SIM dual standby.

Yes, but Apple's mobile phone has always been a single card, which makes it very inconvenient for many people who need two cards for work, but Apple has also begun to support dual SIM since iPhoneXR and iPhone11, and you can switch the main and secondary cards at will when dialing the slide and sending text messages. Click on the contact in the address book, and after entering the details page, you can see the "main number" button under the contact's name, click to switch, and the switching method of SMS is the same.

This answer applies to most Apple phone models.