If you're having trouble receiving a WhatsApp code. Try the following steps.

1. **Locate another smartphone**: Find a different smartphone that has a mobile data connection.

2. **Set up a mobile hotspot**: On this second smartphone, go into the settings and look for the "Mobile Hotspot" or "Tethering" option. Enable this option to turn the smartphone into a Wi-Fi hotspot.

3. **Connect your device to the hotspot**: On your original device (the one where you're waiting for the code), go to your Wi-Fi settings and connect to the newly created hotspot. You should see the name of the second smartphone in your list of available networks.

4. **Request the code again**: Once your device is connected to the new internet source, try requesting the code again.

By following these steps, you're using a different internet connection which might help in successfully receiving the code. Remember, charges may apply for using mobile data, so be sure to check with your network provider.