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  2. Use Face, Fingerprint or PIN to sign in to AOL

    help.aol.com/articles/use-face-fingerprint-or...

    Many smart devices are equipped with biometric authenticators. Learn how to use face, fingerprint or PIN authentication on your smart device to sign in.

  3. Personal unblocking key - Wikipedia

    en.wikipedia.org/wiki/Personal_unblocking_key

    If the wrong PIN is entered more than three times, the SIM card will become locked. It can be unlocked by entering the PUK code provided by the mobile service provider, [1] which may be available on the SIM card's packaging, the contract, or provided by customer service after identity verification. After the PUK code is entered, the PIN must be ...

  4. International mobile subscriber identity - Wikipedia

    en.wikipedia.org/wiki/International_Mobile...

    For GSM, UMTS and LTE networks, this number was provisioned in the SIM card and for cdmaOne and CDMA2000 networks, in the phone directly or in the R-UIM card (the CDMA equivalent of the SIM card). Both cards have been superseded by the UICC. An IMSI is usually presented as a 15-digit number but can be shorter.

  5. Mobile network codes in ITU region 3xx (North America)

    en.wikipedia.org/wiki/Mobile_network_codes_in...

    Originally BellSouth Mobility DCS, then Cingular Wireless, [82] then Aio Wireless, then rebranded as the new GSM Cricket Wireless: 310: 160: T-Mobile: T-Mobile US: Not operational: GSM 1900 [82] GSM shut down Feb 2025 [142] 310: 170: AT&T: AT&T Mobility: Operational: GSM 1900: Formerly Pacific Bell Wireless, then Cingular Wireless [82] CA/NV ...

  6. What’s a Personal Identification Number (PIN) - AOL

    www.aol.com/finance/personal-identification...

    What’s a Personal Identification Number (PIN) Moubin Ghafoory. May 4, 2022 at 11:24 AM. Mixmike / Getty Images.

  7. 2007 Departures: 'Cingular' dropped as AT&T absorbs company - AOL

    www.aol.com/news/2007-12-29-2007-departures...

    The Cingular brand was officially wiped off Cingular Wireless was purchased by AT&T, as part of AT&T's acquisition of BellSouth in 2006. 2007 Departures: 'Cingular' dropped as AT&T absorbs company

  8. Unstructured Supplementary Service Data - Wikipedia

    en.wikipedia.org/wiki/Unstructured_Supplementary...

    Change PIN * * 04 * old PIN * new PIN * new PIN # 042 Change PIN2 Only with Phase 2 SIM * * 042 * old PIN2 * new PIN2 * new PIN2 # 05 Change PIN by PUK * * 05 * PUK * new PIN * new PIN # 052 Change PIN2 via PUK Only with Phase 2 SIM * * 052 * PUK * new PIN2 * new PIN2 # 06 read device number * # 06 # 21 unconditional divert

  9. SIM card - Wikipedia

    en.wikipedia.org/wiki/SIM_card

    A typical SIM card (mini-SIM with micro-SIM cutout) A SIM card or SIM (Subscriber Identity Module) is an integrated circuit (IC) intended to securely store an international mobile subscriber identity (IMSI) number and its related key, which are used to identify and authenticate subscribers on mobile telephone devices (such as mobile phones and laptops).

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