Ecclesiastes 1:9 doesn't include having the internet and world communication in our pocket via smartphones.
But the "new" things that will pop up in the End Times are predicted elsewhere, like Daniel 12:4 ("But you, O Daniel, shut up the words, and seal the book, even to the time of the end: many shall run to and fro, and knowledge shall be increased") and MANY of the things spoken about in the Book of Revelation.
Here's another very scary thing that Ecclesiastes 1:9 doesn't hold true for:
Men's hearts failing them for fear, and for looking after those things which are coming on the earth: for the powers of heaven shall be shaken. (Luke 21:26)
Context: Ecclesiastes 1:9 is not teaching as Divine revelation that no new inventions or discoveries come, any more than the next verses teach that there never was any new inventions nor that such will be remembered.
All things are full of labour; man cannot utter it: the eye is not satisfied with seeing, nor the ear filled with hearing. The thing that hath been, it is that which shall be; and that which is done is that which shall be done: and there is no new thing under the sun. Is there any thing whereof it may be said, See, this is new? it hath been already of old time, which was before us. There is no remembrance of former things; neither shall there be any remembrance of things that are to come with those that shall come after. (Ecclesiastes 1:8-11)
Or that,
There is nothing better for a man, than that he should eat and drink, and that he should make his soul enjoy good in his labour. This also I saw, that it was from the hand of God. (Ecclesiastes 2:24)
Nor that,
Whatsoever thy hand findeth to do, do it with thy might; for there is no work, nor device, nor knowledge, nor wisdom, in the grave, whither thou goest. (Ecclesiastes 9:10)
Instead, while "no new thing under the sun" contextually is referring to the unchanging state of dissatisfaction, that no matter how much man works and obtains and invents things (such as Solomon himself procured), yet it's the same old same ol, that "I have seen all the works that are done under the sun; and, behold, all is vanity and vexation of spirit," (Ecclesiastes 1:14) yet as Divine revelation of Truth it is expressing the dissatisfaction of the natural man, thus reasoning, "There is nothing better for a man, than that he should eat and drink, and that he should make his soul enjoy good in his labour."
As Paul said in allusion to such "If after the manner of men I have fought with beasts at Ephesus, what advantageth it me, if the dead rise not? let us eat and drink; for to morrow we die.Be not deceived: evil communications corrupt good manners" (1 Corinthians 15:32,33) for "the kingdom of God is not meat and drink [denoting the life of the flesh]; but righteousness, and peace, and joy in the Holy Ghost." (Romans 14:17)
Thus the wholly God-inspired word contextually teaches the futility of seeking fulfillment in the natural, as expressed by one who could say (like many Americans),
I made me great works; I builded me houses; I planted me vineyards: I made me gardens and orchards, and I planted trees in them of all kind of fruits: I made me pools of water, to water therewith the wood that bringeth forth trees: I got me servants and maidens, and had servants born in my house; also I had great possessions of great and small cattle above all that were in Jerusalem before me: I gathered me also silver and gold, and the peculiar treasure of kings and of the provinces: I gat me men singers and women singers, and the delights of the sons of men, as musical instruments, and that of all sorts. (Ecclesiastes 2:4-8) And whatsoever mine eyes desired I kept not from them, I withheld not my heart from any joy; for my heart rejoiced in all my labour: and this was my portion of all my labour. Then I looked on all the works that my hands had wrought, and on the labour that I had laboured to do: and, behold, all was vanity and vexation of spirit, and there was no profit under the sun. (Ecclesiastes 2:10-11)
But whose judgment after all this is sound, as consistent with the rest of Scripture:
"Let us hear the conclusion of the whole matter: Fear God, and keep his commandments: for this is the whole duty of man.14 For God shall bring every work into judgment, with every secret thing, whether it be good, or whether it be evil."