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  2. Subsidy Password - Wikipedia

    en.wikipedia.org/wiki/Subsidy_Password

    GSM: (SIM unlock) globe smart sun Alltel or Verizon Wireless do not use any type of subsidy locks on their CDMA phones. Default Code:000000 or 123456 or 654321 Prepaid cellphones from Alltel & Verizon Wireless come locked from the store, but Verizon Wireless prepaid cellphones can be unlocked with a call to Verizon.

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

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

    This list contains the mobile country codes and mobile network codes for networks with country codes between 300 and 399, inclusively – a region that covers North America and the Caribbean. Guam and the Northern Mariana Islands are included in this region as parts of the United States.

  4. 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 ...

  5. SIM lock - Wikipedia

    en.wikipedia.org/wiki/SIM_lock

    Generally, older model Nokia unlock codes are free and instantly retrievable by these services. The unlock codes retrieved must be entered into the mobile phone using the keypad. For DCT4 and DCT3 Nokia , unlock codes consist of a "#" key, followed by "pw+", 10 (DCT3) or 15 (DCT4) digits, "+", and another number ranging from 1-7, and finally ...

  6. Unstructured Supplementary Service Data - Wikipedia

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

    USSD can also be used to refill the balance on the user's SIM card and to deliver one-time passwords or PIN codes. Some operators use USSD to provide access to real-time updates from social-networking websites including Facebook and Twitter. [3] Between 2012 and 2018, the Wikipedia Zero project provided access to Wikipedia articles via USSD. [4]

  7. Aio Wireless - Wikipedia

    en.wikipedia.org/wiki/Aio_Wireless

    The brand was designed to compete with the other brands and providers, likewise sold through independent dealer stores in major urban areas, that offered "value-conscious consumers" unlimited calling, texting, and throttled data, such as Sprint's Boost Mobile and Virgin Mobile, T-Mobile's newly acquired MetroPCS and its newly developed secondary prepaid brand GoSmart Mobile, and America Movil ...

  8. TracFone Wireless - Wikipedia

    en.wikipedia.org/wiki/TracFone_Wireless

    TracFone Wireless, Inc. (TFWI) is an American wireless prepaid service provider.It is a mobile virtual network operator offering prepaid and no-contract services on the Verizon network under multiple brands, including TracFone, Straight Talk Wireless, Total Wireless, Simple Mobile, SafeLink Wireless, and Walmart Family Mobile in partnership with Walmart.

  9. GSM frequency bands - Wikipedia

    en.wikipedia.org/wiki/GSM_frequency_bands

    An at 800/1900 MHz, for a total of 'six' different frequencies (though at most four in a single mode). This allows the same handset to be sold for AT&T Mobility, Verizon, and Sprint in the U.S. as well as a broad range of GSM carriers worldwide such as Vodafone, Orange and T-Mobile (Excluding-US), many of whom offer official unlocking.