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The Motorola Motorola Motorola will have proximity switches to limit the radiation



In August, Motorola announced it could still be the world's first genuine 5G phone – the exclusive version of Verizon's Moto Z3 with 5G Moto Mod. This is a snap-on module that the company promises to give you a madly fast 5Gbps cellular connection faster than most phone lines these days. But buyers of the Moto Z3 had to take the word for the company because the 5G Mod would not be available until "early 2019" when Verizon's 5G NR network was to be released in the US.

Well, 5G Moto Modd just crossed the FCC today and came in surprise ̵

1; a document that has more details on how it will work than I thought the company would ever reveal to the public.

And one of these details will surely surprise you. some people, even if this is not necessarily something that someone has to worry about. Namely, the 5G Moto Mod will include proximity sensors that turn off any of its 4mm 5G antennas if your fingers get too close.

Here is part of the Motorola description: proximity sensors are used to deactivate the transmission from a given antenna array mm when the user can be located in the immediate vicinity of the module and in the direction the module can transmit. The control mechanism is simple in which if the proximity sensors indicate the potential presence of the user within a rough cone area in front of the module where the power density may reach the MPE limit, this module is disconnected from the modem. This stops and prevents the transmission from the module in question until the condition is cleared

Before you respond to this, a few things you need to know:

  • Millimeter wave propagation is considered non-ionizing – not enough
  • Probably already you have experienced radiation with millimeter waves if you have passed an airport scanner. The FDA says that this type of dose has no "known harmful effects on health".
  • The FCC already has exposure limits in millimeter waves, and that's what the Motorola system meets.
  • Motorola continues to say that proximity sensors are not the only way to disable these antennas – Mod also automatically selects an antenna with better signal strength if your fingers block others.

But it is quite interesting that Motorola feels the need to include such a system, and I'm curious if other 5G devices will also have one.

Previously, we learned that the 5G Moto Mod contains virtually all high-end internal smartphones, including its own Snapdragon 855 processor, X50 5G modem, 10 antennas and its own 2000 mAh battery. You need to drain your connected phone, but the FCC submission also reveals a less exciting specification: The mod looks 7 mm thick at its thickest point, which means it will double the thickness of your 6.75 mm Moto Z3 phone.


13.75mm total – 6.75mm phone = 7mm. It looks like Mod narrows to 5.97mm at the edges, but we still do not know how much 5G Mod will cost, or how fast you can get into one connection. Verizon's first 5G-equipped cities – our early practical experience was huge – but it is worth noting that Motorola now advertises only a conservative estimate of 300 to 500Mbps, compared to a 5Gbps that is theoretically capable.

Oh, and I'll leave you with one last luck I noticed in the FCC submission, though you might want to take it with a grain of salt: a sentence saying: "It works only when it's attached to a 5G Mod-compatible smartphone such as the Moto Z3 Pro. "

The rest of the submission is pretty clear that Fashion has only been tested with the existing Moto Z3 – I cross – all figures to confirm – but I must admit it was strange that last year Motorola avoided releasing a new high class flagship phone. This will not be entirely surprising if the "Pro" version of the phone arrives along with Mod when it appears real. Perhaps we will hear something at the Mobile World Congress next week?


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