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  2. 2011 Southwest blackout - Wikipedia

    en.wikipedia.org/wiki/2011_Southwest_blackout

    States with areas largely affected by the Southwest Blackout of 2011. The 2011 Southwest blackout, also known as the Great Blackout of 2011, [1] [2] was a widespread power outage that affected the San Diego–Tijuana area, southern Orange County, Imperial Valley, Mexicali Valley, Coachella Valley, and parts of Arizona. [3]

  3. California power outage map: Over 160,000 customers without ...

    www.aol.com/news/california-power-outage-map...

    Areas in northern and central California were the most impacted by outages Saturday, including Monterey County (over 41,000 outages), Marin County (over 19,000 outages), and Santa Cruz County ...

  4. Cellphone surveillance - Wikipedia

    en.wikipedia.org/wiki/Cellphone_surveillance

    Intentionally hiding a cell phone in a location is a bugging technique. Some hidden cellphone bugs rely on Wi-Fi hotspots , rather than cellular data, where the tracker rootkit software periodically "wakes up" and signs into a public Wi-Fi hotspot to upload tracker data onto a public internet server.This is also legal

  5. Cellular frequencies in the United States - Wikipedia

    en.wikipedia.org/wiki/Cellular_frequencies_in...

    D, E, and F blocks covered huge areas of the country, typically several states at a time, and covered 2 × 5 MHz for D and E blocks, 2 × 10 MHz for F. [5] The 700 MHz band was auctioned in early 2008 using spectrum previously used by television stations' analog broadcasts, with Verizon Wireless and AT&T Mobility winning the majority of ...

  6. California passes school cellphone restrictions. But some ...

    www.aol.com/news/california-passes-school-cell...

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  7. History of mobile phones - Wikipedia

    en.wikipedia.org/wiki/History_of_mobile_phones

    A man talks on his mobile phone while standing near a conventional telephone box, which stands empty. Enabling technology for mobile phones was first developed in the 1940s but it was not until the mid-1980s that they became widely available. By 2011, it was estimated in Britain that more calls were made using mobile phones than wired devices. [1]

  8. 2019 California power shutoffs - Wikipedia

    en.wikipedia.org/wiki/2019_California_power_shutoffs

    The 2019 California power shutoffs, known as public safety power shutoff (PSPS) events, were massive preemptive power shutoffs that occurred in approximately 30 counties in Northern California and several areas in Southern California from October 9 to November 1, 2019, and on November 20, 2019, by Pacific Gas and Electric Company (PG&E), Southern California Edison (SCE), and San Diego Gas ...

  9. California orders schools to restrict cellphone use amid ...

    www.aol.com/news/california-orders-schools...

    Gov. Newsom signed the Phone-Free Schools Act into law. It requires California school districts to draft policies restricting or banning student cellphone use.