Joe, nice to hear from you
I have been dipping into some specs that I know you could appreciate, involving wave lengths and such.
For 3 days my phone would not update my weather, was having trouble finding sites I was looking for, with a response of (site can't be found no connection) with full bars on the wifi and 2 bars on the AT&T connection. I go to town walk in the AT&T store to have them look at it and it works now with no wifi. This is why I love/hate tech.
Ok that is all................... 😁
It's 53° here sunshine and the front door is open for peep outs.
😺😸
I cant speak on the specifics of the AT&T products since I have no experience with them. I also cannot speak of the equipment used in the central offices other than the generic workings that is common industry standards and never in regards to proprietary protocols.
What I do know about WiFi is limited to what I have dealt with in regards to how some of it is incorporated in PC's, single board computers and with Windows10 & Windows11.
So I'm no help to you on your phone at all. Also the AT&T cellular is essentially a separate company from the present day AT&T, which is several generations different from the "American Telephone and Telegraph Company" that I started to work for way back in the early 70's.
As far as Windows and WiFi and if you can not connect to a device, or it is spotty you can try restarting the driver. If that doesn't work then you probably need a fresh copy of the driver to replace the damaged one on your computer.
An interesting side note to the topic of cellular technology opposed to land line communications is how the industry changed from the initial telegraph signal, a radio signal thru wire carrying what was really computer speak, dashes and dots or O's and 1's caused by the transmitter starting and stopping. Then that changed when Alex said Watson, get your hinny in here, dang it! That was when he made the first telephone call back in 1876. It was an analog voice transmission over wire. The signal structure closely emulates a radio wave transmission over the airways. The top and bottom of the wave sort of chopped off and the rest sort of squished together. Think of an oscilloscope waveform.
Then analog transmission started the transition into digital transmission, think of oscilloscope square-waveform. The wave was sliced and diced and those little pieces were combined with many more pieces and lumped into a frame, (think of movie film frames) and the frames were combined with many more frames and then transmitted as a package that was combined with many more packages and thru time-division multiplexing many many packages are transmitted.
Yeah, a bunch of stuff in one pipe, but wait!! There's more thru frequency-division multiplexing. . . . .
On yet another side note, the invention of the CD and CD player works the same way fiber optic telephone systems work, and that's pretty amazing all by it's self.
Don

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