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  2. Comparison of mobile phone standards - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_mobile_phone...

    The drawback is that at some point, one cannot talk any louder. After this if the noise still rises (more people join the party/cell) the listener cannot make out what the talker is talking about without coming closer to the talker. In effect, CDMA cell coverage decreases as the number of active users increases. This is called cell breathing.

  3. The iPhone 14 May Have Just Changed Overlanding Forever - AOL

    www.aol.com/finance/iphone-14-may-just-changed...

    If it can deliver the cheap, reliable satellite communication it promises, the iPhone 14 will solve one of overlanding's biggest problems.

  4. Wireless device radiation and health - Wikipedia

    en.wikipedia.org/wiki/Wireless_device_radiation...

    The HPA also says that due to the mobile phone's adaptive power ability, a DECT cordless phone's radiation could actually exceed the radiation of a mobile phone. The HPA explains that while the DECT cordless phone's radiation has an average output power of 10 mW, it is actually in the form of 100 bursts per second of 250 mW, a strength comparable to some mobile phones.

  5. Mobile phone signal - Wikipedia

    en.wikipedia.org/wiki/Mobile_phone_signal

    They have attempted to address the complaint in various ways, including expansion of their home network coverage, increased cell capacity, and offering refunds for individual dropped calls. Various signal booster systems are manufactured to reduce problems due to dropped calls and dead zones. Many options, such as wireless units and antennas ...

  6. This iPhone feature is helping families communicate as cell ...

    www.aol.com/iphone-feature-saving-lives-during...

    Social-media posts urged people to update to iOS 18 on iPhone 14s and later to stay connected. In the wake of Hurricane Helene , people left without power or cell service are transforming their ...

  7. What is Apple's 'SOS mode'? iPhone feature lets you make ...

    www.aol.com/news/apples-sos-mode-iphone-feature...

    Follow live coverage of the nationwide outages However, this only allows for automatic calls to a local emergency number. SOS mode also shares your location with the emergency service.

  8. Cellular frequencies - Wikipedia

    en.wikipedia.org/wiki/Cellular_frequencies

    In Russia and some other countries, local carriers received licenses for 450 MHz frequency to provide CDMA mobile coverage area. Many GSM phones support three bands (900/1,800/1,900 MHz or 850/1,800/1,900 MHz) or four bands (850/900/1,800/1,900 MHz), and are usually referred to as tri-band and quad-band phones, or world phones ; with such a ...

  9. 'No excuse,' mayor says, for Helene victims to be isolated ...

    www.aol.com/deep-frustration-cell-phone-outages...

    In North Carolina, the company has also released a cell-enabled tethered drone that provides cell service from the air. "We are seeing slow but steady progress," the company said in a Sunday ...