To text someone on WhatsApp without saving their number on your device, you can use a feature called Click to Chat. Here are the steps to follow:
1. Open your web browser and go to the URL https://wa.me/number, replacing “number” with the phone number of the person you want to message. Make sure to include the country code, but leave out any zeros or other special characters.
2. For example, if the person’s phone number is +44 1234567890, you would enter https://wa.me/441234567890 in your browser.
3. Press enter, and you will be taken to a WhatsApp chat window with the person’s phone number already entered.
4. Type your message in the chat window and hit send.
Note that this method only works if the person you want to message has a WhatsApp account. If they don’t have WhatsApp, you won’t be able to use Click to Chat to contact them.
Also, keep in mind that this method does not save the person’s phone number to your contacts list. If you want to save their number for future use, you will need to add it manually to your contacts.