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Tens of thousands have lost cell phone service due to AT&T’s network outage. Many have been faced with cell phones stuck in SOS modes.
In short, your iPhone going into SOS mode means your cellular connection is bad. This doesn't apply to your Wi-Fi connection. You'd still be able to use that connection to browse online and ...
For people who use Apple iPhones, their only service option during an outage or when cellular service is unavailable can be accessed through the device's SOS mode. Follow live coverage of the ...
A known failure mode of Lightning plugs is power contacts turning black over time, sometimes causing the affected side of the connector to cease functioning. When the plug is inserted or unplugged while powered, a brief spark may occur between the mating power contacts in the plug and socket, eroding their gold plating. Because the Lightning ...
Data Carrier Detect (DCD) or Carrier Detect (CD) is a control signal present inside an RS-232 serial communications cable that goes between a computer and another device, such as a modem. This signal is a simple "high/low" status bit that is sent from a data communications equipment (DCE) to a data terminal equipment (DTE), i.e., from the modem ...
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The device can be used to simulate an incoming call by applying the AC ringing signal voltage to a POTS line to make the telephones on that line ring. A magenta box in conjunction with an orange box (which emulates the caller ID signal to create falsified data) is called a vermilion box. The hardware also has multiple legitimate applications.
Thousands of users of AT&T, T-Mobile and Verizon Wireless reported issues with the service providers on Thursday. Here's what we know.