I don't believe He ever made any references directly mentioning any modern-day technologies (with modern-day interpreted to mean any time period after His 33 years among mankind).
But when did He say that would happen? At the last trump. After the man of perdition is revealed standing where he should not. (Antichrist revealed and stands in the Temple claiming to be God)
In Revelation there are 7 trumpets (trumps) used to announce when different events in prophecy is happening. https://www.endtime.com/blog/revelation-seven-trumpets-shall-sound/
1 Cor 15:52 In a moment, in the twinkling of an eye, at the last trump: for the trumpet shall sound, and the dead shall be raised incorruptible, and we shall be changed
The chosen people never realized He was the Messiah---they would have run Him out of town if He had said "By the way, here's a few more things that exist that you might not be able to understand yet."
I don't understand why so many people who think God to be powerful and all-knowing refuse to accept that He didn't fully explain the reality and necessity of any of the truths you listed in your answer.
It's pretty obvious to any thinking adult that human beings have to grown mentally as well as physically before they are ready to understand certain things.
The Jews had hundreds of years as a "chosen" people, and yet they didn't even realize that Christ was the one who was predicted to come to them.
Like you, they rejected the scriptures to cling to non-scriptural traditions. (Mark 7:8, 9) You let go of the commandment of God and cling to the tradition of men.” 9 Further, he said to them: “You skillfully disregard the commandment of God in order to keep your tradition.
Zack 