How to send text messages to activate free yellow diamonds

You cannot activate free yellow diamonds by sending text messages, you can only activate paid yellow diamonds.

The specific steps are:

1. Open the official website of Tencent Recharge Center and click the "Service Activation" option at the top of the page.

2. Click to select to activate the Yellow Diamond business, select the activation method as "mobile phone", and enter the mobile phone number and QQ number. Click the Next button.

3. Follow the page prompts and send the SMS code to the designated number to activate.