> For the complete documentation index, see [llms.txt](https://docs.madhype.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.madhype.io/advanced-marketing-modules-business-plan-only/sms-marketing/how-to-buy-a-phone-number-and-start-sending-sms-mms.md).
# How to Buy a Phone Number & Start Sending SMS/MMS
{% hint style="info" %}
To enable the phone function, you must add a payment method under "Company Billing" in the settings and charge a minimum of $10 credit in order to send SMS/MMS.
{% endhint %}
## Add Payment Method
1. **Check your email for the direct link** OR Go to "Setting" and click "Company Billing"
See your email
Setting -> Company Billing
2. Fill out your card information and click "Add Card"
3. After adding your card, you will be able to access the billing dashboard. Please note that **a $1 refund** will be processed to verify the validity of your card. This is not a charge, but you may see it as a pending transaction on your card which will disappear after a few days.
4. To view the full company billing transactions, you can click on 'See Details' under the Credit section.
## Buy a Phone Number
1. Go to "Setting" and click "Phone Numbers"
2. Click on **Add Number**
3. Select the **Country** you want to purchase
4. Choose a phone number starting with an area code\