Oops! ( sorry for repost)
Why keep us all in suspence then? The pilot reported electrical problems, what then is your speculation about the 757's primitive system. If an electrical problem made the A/C difficult to fly, then what might it have been?
At a guess from the former 757 pilot I’m IM’ing, possibly one or more of the generators went off line. He also says that it’s possible that it was just the ancient electronics packing it in. He flies for American and recently transitioned to the 777; says that it’s not at all unusual for those aged planes to have problems with their avionics.
Also says that the 757’s avionics are too stupid to have suffered interference from cell phones...
Cell phones use a much higher frequency then 800MHz and have for some time.