Warming Up New Phone Numbers for WhatsApp API

Recent changes in WhatsApp's security protocols have led to stricter monitoring of new numbers, frequently resulting in blocks. This presents a challenge for businesses integrating the WhatsApp API, particularly those using new eSIM numbers. To avoid these blocks, it's crucial to 'warm up' new numbers, mimicking human behavior to establish legitimacy.

The longer a number has been registered with WhatsApp, the more resistant it is to blocking.

The number just registered in WhatsApp is immediately "under suspicion". Therefore:

• Very important: Do not scan the QR code immediately after registering a new number on WhatsApp. Wait a day or more!

The Concept of 'Number Warming'

'Number warming' in WhatsApp context means gradually increasing a new number's activity. This process is vital to avoid triggering WhatsApp's anti-spam algorithms, which are quick to block numbers showing sudden, high-volume activity.

Warming involves typical user behaviors: messaging, calling, status updates, and group participation. It's a strategy to show the number is used naturally, not for spam or automation. Proper warming builds a usage history, reducing the risk of blocks when starting API integration.

Strategies for Warming Up New Numbers

Successfully "warming up" a new number on WhatsApp involves a step-by-step approach over a period of about 5-10 days. Here's a step-by-step guide:

• Important: After connecting a new number, you should start sending messages via API only the next day. Don't be in a hurry!

Warning, the following are "perfectly calibrated" tips for a new number just purchased. We realize that you don't always have time to do this. Therefore, we encourage you to use these tips as a basic constructor, changing the rules to suit yourself and your situation.

Day 0:

• Do not connect your newly registered WhatsApp number to our service.

• Finish setting up your profile on your phone (set details, profile picture).

• Make sure you have at least 20-50 contacts in your address book, if not, start any contacts in your address book (as an empty address book is a risk factor!)

• Handwrite from your phone to 1-2 contacts you know that are in your phonebook. Make sure you get a response.

Day 1:

• Connect WhatsApp by scanning a QR code or getting an OTP code. Do not perform any actions via API.

• Through your phone, start a few private chats (3-6 conversations) with your existing contacts.

• Write a few varied messages. Make sure you're sure to get a response. Send and receive a few images or videos / stickers to mimic typical user behavior.

Day 2:

• Start using the API.

• Increase the number of conversation to 10-15 chats.

• Continue to write a few varied messages and media message (about 1 messages per minute). Provide responses to your messages.

Day 3-5: Gradually Increasing Activity

• Begin to initiate more conversations, gradually increasing the number each day.

• Start participating in group conversations, if possible.

• Send a wider variety of messages, including links and longer texts.

Strive to keep the number of sent messages equal to the number of incoming messages.

Day 5+: Diversifying Activities

• Create a groups or join more groups, actively participating in them.

• Start using WhatsApp status updates.

• Continue to increase the volume of messages and diversify the types of messages sent.

For starters, don't send more than 2 messages per minute, more than 6 hours a day, more than 3 days in a row.

General Tips:

• Ensure that the activities mimic real human behavior – random rather than systematic.

• Avoid sending too many messages in a short time or engaging in one-way communication.

• Interactions should be spread throughout the day, not clustered at specific times.

• Gradually build up the number of messages and types of interactions.

• Keep in mind all the basic tips we give in the article: How to not get Banned?