# *888*[number]# on iPhone: Apply an AT&T Prepaid Refill PIN URL: https://byshahid.com/blog/apply-an-att-prepaid-refill-pin-star-888-star-number-iphone/ App: Secret Codes: IMEI & Carrier (https://apps.apple.com/us/app/secret-codes-imei-carrier/id6807154322) Author: Muhammad Shahid Updated: 2026-11-04 > *888*[number]#: Redeem a refill card PIN straight from the keypad. AT&T Prepaid refill cards carry a long numeric PIN. Rather than signing in anywhere, you can dial star 888 star, then the PIN, then hash, and the value is applied to the line you dialled from. AT&T gives the worked example *888*1234567899874#. - **Code:** *888*[number]# - **What it does:** Redeem a refill card PIN straight from the keypad. - **Published for:** AT&T - **Type:** Carrier specific Redeem a refill card PIN straight from the keypad. This page explains what `*888*[number]#` 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 *888*[number]# do? AT&T Prepaid refill cards carry a long numeric PIN. Rather than signing in anywhere, you can dial star 888 star, then the PIN, then hash, and the value is applied to the line you dialled from. AT&T gives the worked example *888*1234567899874#. The PIN must be typed with no spaces or dashes. If the card was bought in store, scratch off the panel carefully first, because a smudged digit will simply be rejected. There is no fee for redeeming a card this way. AT&T charges a convenience fee for agent-assisted and automated card payments, which this route avoids. **Important:** A refill PIN can only be redeemed once, and it is applied to whichever line dials the code. Dial it from the phone you want topped up. ## How do I use *888*[number]#? - Scratch off the PIN panel on the refill card. - Dial *888* then the full PIN with no spaces, then #. - Press call and wait for the confirmation. ## Which carriers does this apply to? | Published for | AT&T | | Type | Carrier specific | | Good to know | AT&T Prepaid lines only. Postpaid accounts do not use refill PINs. | _Screenshot: The Secret Codes detail screen shows the steps, the carriers and an Open in Phone button._ ## Related more carrier and n11 codes - [*72427: AT&T Pay by Phone in Spanish](/blog/att-pay-by-phone-in-spanish-star-72427-iphone/) - [AT&T Prepaid Pay by Text](/blog/att-prepaid-pay-by-text-iphone/) - [*3286#: AT&T Data Usage in Spanish](/blog/att-data-usage-in-spanish-star-3286-iphone/) - [+1-314-925-6925: AT&T Support From Overseas](/blog/att-support-from-overseas-iphone/) - [*876#: AT&T Minutes in Spanish](/blog/att-minutes-in-spanish-star-876-iphone/) - [#674#: Check T-Mobile Message Usage](/blog/check-t-mobile-message-usage-hash-674-iphone/) See all [more carrier and n11 codes](/blog/iphone-codes/more-carrier-codes/) 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. This entry is part of Secret Codes Pro. **Secret Codes: IMEI & Carrier** is free on the App Store: https://apps.apple.com/us/app/secret-codes-imei-carrier/id6807154322 ## FAQ ### What does *888*[number]# do on iPhone? Redeem a refill card PIN straight from the keypad. AT&T Prepaid refill cards carry a long numeric PIN. Rather than signing in anywhere, you can dial star 888 star, then the PIN, then hash, and the value is applied to the line you dialled from. ### What else should I know about *888*[number]#? AT&T gives the worked example *888*1234567899874#. The PIN must be typed with no spaces or dashes. If the card was bought in store, scratch off the panel carefully first, because a smudged digit will simply be rejected. There is no fee for redeeming a card this way. ### What are the steps for *888*[number]#? 1. Scratch off the PIN panel on the refill card. 2. Dial *888* then the full PIN with no spaces, then #. 3. Press call and wait for the confirmation. ### Where do I use *888*[number]#? On the keypad of the Phone app. ### How do I add the number to *888*[number]#? Replace [number] with the full phone number, including the area code, then press Call. ### Is *888*[number]# 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 *888*[number]# work on? It is published for AT&T. AT&T Prepaid lines only. Postpaid accounts do not use refill PINs. ### Is there anything to watch out for with *888*[number]#? A refill PIN can only be redeemed once, and it is applied to whichever line dials the code. Dial it from the phone you want topped up. ### Does *888*[number]# 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 *888*[number]# 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 *888*[number]# 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 *888*[number]#? *72427: AT&T Pay by Phone in Spanish. *PAGAR — the Spanish-language AT&T payment line. ## Sources - [Verizon Support](https://www.verizon.com/support/)