Why I Got This Error: 131026 Message Undeliverable

You may encounter the "Message Undeliverable" error when attempting to send a message on WhatsApp. This error occurs due to one of the following reasons:

• The recipient’s phone number is not associated with a WhatsApp account.

• The recipient has not accepted WhatsApp’s latest Terms of Service and Privacy Policy.

• The recipient is using an outdated version of WhatsApp.

What version of WhatsApp is required?

To receive messages, the recipient must be using the following WhatsApp versions or newer:

• Android: 2.21.15.15

• SMBA: 2.21.15.15

• iOS: 2.21.170.4

• SMBI: 2.21.170.4

• KaiOS: 2.2130.10

• Web: 2.2132.6

How can the recipient resolve this issue?

If you are unable to send a message, ask the recipient to do the following:

1. Confirm their WhatsApp account

   • Ensure their phone number is registered on WhatsApp.

   • Verify that they can send a message to your WhatsApp Business phone number.

2. Accept the latest Terms of Service

   • Navigate to Settings > Help (or Settings > Application Information).

   • Accept the latest Terms of Service if prompted.

   • Or try to access this link: https://wa.me/tos/20210210

3. Update WhatsApp

   • Install the latest version of WhatsApp from their app store (Google Play, App Store, or WhatsApp website).

By following these steps, the recipient should be able to receive messages again.