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tech / sci.electronics.misc / phone antennas

phone antennas

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Subject: phone antennas
From: rdelaney...@gmail.com (Rich D)
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by: Rich D - Tue, 17 Aug 2021 23:43 UTC

Do cell phones contain a separate antenna each for
phone network, Wi-fi and Bluetooth?

Also, does Bluetooth include any security? Like,
if a user is listening to his music through a Bluetooth link,
can I pick it up, with my earphones? Or, more
problematically, when he makes a purchase with Apple Pay?

--
Rich

Re: phone antennas

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Subject: Re: phone antennas
From: thomas.p...@gmail.com (tlbs101)
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by: tlbs101 - Wed, 1 Sep 2021 17:38 UTC

On Tuesday, August 17, 2021 at 5:43:23 PM UTC-6, Rich D wrote:
> Do cell phones contain a separate antenna each for
> phone network, Wi-fi and Bluetooth?
>
> Also, does Bluetooth include any security? Like,
> if a user is listening to his music through a Bluetooth link,
> can I pick it up, with my earphones? Or, more
> problematically, when he makes a purchase with Apple Pay?
>
> --
> Rich
Each transceiver has its own separate antenna.
Bluetooth5 allows for multiple connections from a single master. You can't eavesdrop -- the Bluetooth5 equipped smart phone must make the Bluetooth connection to both devices.

- Tom P.

Subject	Author
phone antennas	Rich D
Re: phone antennas	tlbs101