> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://phonebox.crisp.help/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# [USA] What You Can Do in the PhoneBox US Self-Serve

# What You Can Do in the PhoneBox US Self-Serve

Managing your PhoneBox services is easy through our online self-serve portal or the PhoneBox app.
[How to Sign up PhoneBox Self-serve](https://phonebox.crisp.help/en/article/how-to-sign-up-to-use-self-serve-qjqz4/)


### Available Feature on PhoneBox Self-serve
###  
###### For All Plan Users

* Add or remove auto-payment : You can manage your auto-payment method
* Update account information : You can update your full name
* Extend your service : You can manually extend your service by adding another service term to your current plan.
* Change your plan :  You can switch to any PhoneBox 7-Day, 14-Day, or 30-Day plan. Please submit your plan change request before renewing your service.
* Add data : You can add more high-speed data to your current 30-day term. (1GB high-speed data: $10 + tax)

###### **For 30-Day Plan Users**

* Add unlimited international calling : You can add an unlimited international calling feature. [__List of 2](https://phonebox.crisp.help/en/article/list-of-countries-for-international-calling-1r7i5vf/)7 [Eligible Countries for International Calling](https://phonebox.crisp.help/en/article/list-of-countries-for-international-calling-1r7i5vf/)

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# Do you still need help?

Are you looking for different information about PhoneBox? You can visit [the support section](https://www.phoneboxmobile.com/support), select the USA flag and read the frequently asked questions (FAQs). If you haven’t found the information you need, please contact our customer care via [services@gophonebox.com](mailto:services@gophonebox.com) or toll-free: 1-855-886-0505.