Automatically convert 11-digit contacts to 10-digit effortlessly

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Ngày cập nhật gần nhất: 15/4/2026

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From September 15th to October 7th, SIM cards with 11 digits will be changed to 10 digits. Manually converting your contacts can be time-consuming. This guide will show you how to update your 11-digit contacts to 10 digits automatically using the 'contact conversion' app.

From September 15th to October 7th, SIM cards with 11 digits will be changed to 10 digits. Manually converting your contacts can be time-consuming. This guide will show you how to update your 11-digit contacts to 10 digits automatically using the 'contact conversion' app.

Step 1: Download the 'contact conversion' app for Android or iOS.

Step 2: Open the app.

Step 3: Select the magnifying glass button to start scanning your entire contacts list.

Step 4: Agree to allow the app access to your contacts.

Step 5: After scanning, the list of 11-digit contacts to be converted to 10 digits will appear.

Step 6: You can tap on the three horizontal lines above to filter contacts by network, or deselect all and choose manually.

Step 7: After selecting the numbers you want to convert, double-check and tap 'switch to 10 digits' below. (Note: only select numbers that have reached the conversion time, refer to the table above for the conversion time of each number)

Step 8: Select 'OK' to confirm.

Step 9: Completion notification appears. You can review your contacts after conversion.

Note: During the initial conversion period, there may be instances where calls cannot be made due to incomplete network number migration. You can choose to 'go back' to the main screen and then press 'restore' to revert to the old number. Once the network completes the number migration, you can proceed to change the number as usual.

We hope this guide helps you quickly automate the conversion of your contacts. If you have any questions during the process, feel free to leave a comment below.

You might also be interested in:

>> Switching 11-digit SIM for Facebook.

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>> Compilation of shortened 11-digit SIM prefixes for each network.

>> [Infographic] Comprehensive information on switching 11-digit SIMs.

Mytour Q&A

Frequently Asked Questions

What steps should I follow to convert 11-digit contacts to 10 digits?

To convert your 11-digit contacts to 10 digits, download the 'contact conversion' app, scan your contacts, select the numbers to convert, and then tap 'switch to 10 digits' to finalize the process.

Will using the contact conversion app affect my existing contacts in any way?

No, using the contact conversion app will not affect your existing contacts negatively. It simply automates the process of updating the phone numbers to comply with the new 10-digit format.

How can I ensure I select the correct contacts for conversion?

You can filter your contacts by network or manually select the numbers you want to convert. Make sure to double-check your selections before tapping 'switch to 10 digits' for accuracy.

What should I do if I encounter issues while converting my contacts?

If you encounter issues during the conversion process, you can go back to the main screen of the app and press 'restore' to revert to the old numbers. This ensures your contacts remain intact.

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