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Older cell phones that are only compatible with 3G or even older 2G networks won't be able to receive calls or text, including to 911, according to the Federal Communications Commission.
Mobile phones contain both cellular and non-cellular radios used for voice and data communication. There are also two types of dual-mode phones which use cellular radio which will contain GSM/CDMA/W-CDMA as well as other technology like IEEE 802.11 radio or DECT (Digital Enhanced Cordless Telecommunications) radio.
As a result, only phones that were purchased before or within 90 days of the effective date could continue to be unlocked by users. Phones purchased more than 90 days past the effective date would again be subject to the anti-circumvention clause of the DMCA and could not be legally unlocked without the carrier's permission. [4] [1]
Mobile virtual network operators (MVNOs) in the United States lease wireless telephone and data service from the four major cellular carriers in the country—AT&T Mobility, Boost Mobile, T-Mobile US, and Verizon—and offer various levels of free and/or paid talk, text and data services to their customers.
Four of the top five wireless providers have all standardized on 4G LTE and 5G NR as their wireless communication standards, whereas Boost Mobile uses only 5G NR.Of which, LTE has been deployed across their entire coverage area; however, the LTE bands used by each provider remain largely incompatible.
Ting's cellular business model does not subsidize phone sales or require contracts beyond month-to-month. Pricing is in separate data tiers, all of which deliver tiered voice and text. [18] Ting supports devices that run on T-Mobile's and Verizon's (CDMA) cellular networks depending on the frequencies of the device. Devices can be purchased ...
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