Secret Codes guide
*639# on AT&T: Check Upgrade Eligibility
By Muhammad Shahid · · 3 min read
Quick answer
*639#: *NEW# — find out when you can upgrade. 639 spells NEW. AT&T replies by text with the upgrade status of the line. AT&T postpaid lines. Behaviour differs on instalment plans, where eligibility depends on how much of the device is paid off.
Secret CodesDial codes, SIM & network test · Free on the App StoreDownload free →| Code | *639# |
|---|---|
| What it does | *NEW# — find out when you can upgrade. |
| Published for | AT&T |
| Type | Support varies |
*NEW# — find out when you can upgrade. This page explains what *639# 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.
What does *639# do?
639 spells NEW. AT&T replies by text with the upgrade status of the line.
How do I use *639#?
- Open the Phone app and tap Keypad.
- Type *639# 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 postpaid lines. Behaviour differs on instalment plans, where eligibility depends on how much of the device is paid off. |
Related verizon, at&t and t-mobile codes
- *729: Make A Payment
- *777#: Check Prepaid Balance
- *3282#: Check Data Usage
- AT&T ActiveArmor
- *646#: Check Minutes Used
- #225#: Check Your Balance
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 *639# do on iPhone?
*NEW# — find out when you can upgrade. 639 spells NEW. AT&T replies by text with the upgrade status of the line.
What are the steps for *639#?
1. Open the Phone app and tap Keypad. 2. Type *639# exactly as written. 3. Press the green Call button and wait for the result.
Where do I use *639#?
On the keypad of the Phone app.
Do I need to press Call after typing *639#?
Yes. Type it on the Phone keypad, then press the green Call button.
Is *639# 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 *639# work on?
It is published for AT&T. AT&T postpaid lines. Behaviour differs on instalment plans, where eligibility depends on how much of the device is paid off.
Does *639# 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 *639# 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 *639# 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 *639#?
*729: Make A Payment. *PAY — start a payment by phone.
What else is in this category?
*777#: Check Prepaid Balance. The balance code for AT&T PREPAID lines.
Can I find *639# in an app?
Yes. Secret Codes, a free iPhone app, includes it with its steps and carrier details, as part of Secret Codes Pro.
Sources
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