S6 mobile phone will automatically convert to MMS when sending a contact by SMS. How to cancel the conversion?

According to your description, if the SMS sent by your mobile phone is automatically changed to MMS, when the number of SMS exceeds 10 (670 Chinese characters), it will be automatically changed to MMS. This phenomenon is normal, please feel free to use it. If the number of characters does not exceed 10(670 Chinese characters), we suggest you try the following methods:

1. Uninstall the recently downloaded and installed third-party software.

2. Try changing a SIM card.

3. Try to restore the factory settings.

If the problem still exists after the above operation, it is recommended that you bring the purchase invoice, three-guarantee certificate and mobile phone to the local Samsung service center for inspection by engineers. Please click the following link to find out the specific location of Samsung Service Center:.

It is recommended that you apply for "booking to the store" in Samsung official website and enjoy priority maintenance service:/pre-order.

After the appointment is successful, please bring your machine, invoice and warranty card to the service center you reserved on time.

If you have any comments, suggestions and comments, please click: support.samsung.com.cn/survey.