# 611 on iPhone: Ultra Mobile Customer Care URL: https://byshahid.com/blog/ultra-mobile-customer-care-iphone/ App: Secret Codes: IMEI & Carrier (https://apps.apple.com/us/app/secret-codes-imei-carrier/id6807154322) Author: Muhammad Shahid Updated: 2026-11-04 > 611: Reaches Ultra Care from your Ultra line. Ultra Mobile documents 611 from an Ultra phone, or 888-777-0446 from anything else, as the way to reach its Care team. Ultra runs the same T-Mobile host network as Mint and shares the same 6700 SMS short code, which is not a coincidence: the two brands are run by the same company. - **Code:** 611 - **What it does:** Reaches Ultra Care from your Ultra line. - **Network:** T-Mobile - **Type:** Carrier specific Reaches Ultra Care from your Ultra line. This page explains what `611` does, how to use it on an iPhone and which carriers it applies to. I build **Secret Codes: IMEI & Carrier**, a free iPhone app with 317 checked codes and guides, including this one. If you would rather tap than memorise, [get Secret Codes on the App Store](https://apps.apple.com/us/app/secret-codes-imei-carrier/id6807154322). ## What does 611 do? Ultra Mobile documents 611 from an Ultra phone, or 888-777-0446 from anything else, as the way to reach its Care team. Ultra runs the same T-Mobile host network as Mint and shares the same 6700 SMS short code, which is not a coincidence: the two brands are run by the same company. Care hours are limited, so for a straightforward balance or plan question the 6700 text codes will get you an answer faster. ## How do I use 611? - Open the Phone app and tap Keypad. - Type 611 exactly as written. - Press the green Call button and wait for the result. ## Who is this for? | Network | T-Mobile | | Type | Carrier specific | | Good to know | Ultra Mobile lines only. Ultra rides T-Mobile, but this is Ultra's own support line. | _Screenshot: The Secret Codes detail screen shows the steps, the carriers and an Open in Phone button._ ## Related prepaid and mvno codes - [Mint Mobile: Roaming Pass Status](/blog/mint-mobile-roaming-pass-status-iphone/) - [Ultra Mobile: Check Your Balance](/blog/ultra-mobile-check-your-balance-iphone/) - [Mint Mobile: Self-Service Menu](/blog/mint-mobile-self-service-menu-iphone/) - [Ultra Mobile: International Roaming Balance](/blog/ultra-mobile-international-roaming-balance-iphone/) - [Mint Mobile: Check Data Used](/blog/mint-mobile-check-data-used-iphone/) - [*611: Metro by T-Mobile Customer Service](/blog/metro-by-t-mobile-customer-service-star-611-iphone/) See all [prepaid and mvno codes](/blog/iphone-codes/prepaid-and-mvno/) or [every category of iPhone codes](/blog/iphone-codes/). ## How Secret Codes helps Secret Codes keeps this and every other entry a search away. Pick your carrier once and each entry says whether it is published for your line. You can save favourites, add a private note, and record whether a code worked on your line. **Secret Codes: IMEI & Carrier** is free on the App Store: https://apps.apple.com/us/app/secret-codes-imei-carrier/id6807154322 ## FAQ ### What does 611 do on iPhone? Reaches Ultra Care from your Ultra line. Ultra Mobile documents 611 from an Ultra phone, or 888-777-0446 from anything else, as the way to reach its Care team. ### What else should I know about 611? Ultra runs the same T-Mobile host network as Mint and shares the same 6700 SMS short code, which is not a coincidence: the two brands are run by the same company. Care hours are limited, so for a straightforward balance or plan question the 6700 text codes will get you an answer faster. ### What are the steps for 611? 1. Open the Phone app and tap Keypad. 2. Type 611 exactly as written. 3. Press the green Call button and wait for the result. ### Where do I use 611? On the keypad of the Phone app. ### Is 611 a hidden or secret code? No. It is a published service, not a hidden menu. iPhones do not have Android-style engineering menus. ### Who can use 611? Customers of the carrier named on this page. Ultra Mobile lines only. Ultra rides T-Mobile, but this is Ultra's own support line. ### Does 611 work on Android phones too? It is handled by the carrier or service rather than the iPhone, so it is not tied to one phone brand. Check with your carrier. ### Will 611 work outside the US? It is published for US carriers and services, so do not count on it abroad. Ask your carrier before you travel. ### What if 611 does not work on my iPhone? Check that it applies to your carrier first, because carriers decide which services they offer and can change them. If it should apply to your line, contact your carrier. ### What is related to 611? Mint Mobile: Roaming Pass Status. Text GOROAM to 6700 to confirm your roaming pass. ### What else is in this category? Ultra Mobile: Check Your Balance. Text BAL to 6700 for balance and usage. ### Can I find 611 in an app? Yes. Secret Codes, a free iPhone app, includes it with its steps and carrier details. ## Sources - [Apple Support: Find the serial number or IMEI on your iPhone](https://support.apple.com/en-us/108037) - [Wikipedia: USSD codes](https://en.wikipedia.org/wiki/Unstructured_Supplementary_Service_Data)