Secret Codes guide
*777# on AT&T: Check Prepaid Balance
By Muhammad Shahid · · 3 min read
Quick answer
*777#: The balance code for AT&T PREPAID lines. AT&T PREPAID accounts use a separate balance code from postpaid. It returns the remaining balance and the expiry date of the current plan period.
| Code | *777# |
|---|---|
| What it does | The balance code for AT&T PREPAID lines. |
| Published for | AT&T |
| Type | Support varies |
The balance code for AT&T PREPAID lines. This page explains what *777# does, how to use it on an iPhone and which carriers it applies to.
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What does *777# do?
AT&T PREPAID accounts use a separate balance code from postpaid. It returns the remaining balance and the expiry date of the current plan period.
How do I use *777#?
- Open the Phone app and tap Keypad.
- Type *777# exactly as written.
- Press the green Call button and wait for the result.
Which carriers does this apply to?
| Published for | AT&T |
|---|---|
| Type | Support varies |
| Good to know | AT&T PREPAID lines only. Postpaid lines should use *225#. |

Related verizon, at&t and t-mobile codes
- *639#: Check Upgrade Eligibility
- AT&T ActiveArmor
- *729: Make A Payment
- #225#: Check Your Balance
- *3282#: Check Data Usage
- #646#: Check Minutes Used
See all verizon, at&t and t-mobile codes or every category of 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. This entry is part of Secret Codes Pro.
Frequently asked questions
What does *777# do on iPhone?
The balance code for AT&T PREPAID lines. AT&T PREPAID accounts use a separate balance code from postpaid. It returns the remaining balance and the expiry date of the current plan period.
What are the steps for *777#?
1. Open the Phone app and tap Keypad. 2. Type *777# exactly as written. 3. Press the green Call button and wait for the result.
Where do I use *777#?
On the keypad of the Phone app.
Do I need to press Call after typing *777#?
Yes. Type it on the Phone keypad, then press the green Call button.
Is *777# a hidden or secret code?
No. It is a published service, not a hidden menu. iPhones do not have Android-style engineering menus.
Which carriers does *777# work on?
It is published for AT&T. AT&T PREPAID lines only. Postpaid lines should use *225#.
Does *777# 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 *777# 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 *777# 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 *777#?
*639#: Check Upgrade Eligibility. *NEW# — find out when you can upgrade.
What else is in this category?
AT&T ActiveArmor. AT&T's spam blocking and call screening service.
Can I find *777# in an app?
Yes. Secret Codes, a free iPhone app, includes it with its steps and carrier details, as part of Secret Codes Pro.