Not going to happen
The only reason computing has had so much of an impact on our lives is because, for the past fifty years, there has been every reason to improve on it.
From the room-sized behemoths that could barely calculate a square root per second, to the desktop computers that revolutionized how we work, to the Internet that revolutionized how we could learn and be informed (not always for the better), to today's computing devices that can do it all and be carried in a pocket (for certain values of pocket), computing has been on a necessary improvement curve, and with shining results.
But, with all this tech, what hasn't changed ? Videophone. Oh, technically it has, tremendously. But nobody likes it. They didn't like it when it came out, they don't like it today, and I see no reason to think they will change their mind tomorrow.
Why are teens (and now tweens) always typing on the screens grafted into their hands ? Because texting can be done at your rythm. You impose your little circle of privacy, respond when you feel like it. Zoom, or videophone, or even phoning, deprives you of that choice. You're talking to someone directly, you have to respond at the right moment. That is why all those texters are not actually phoning people all day.
Having an implant in your brain, going on the theory that that will actually be one day possible and 100% reliable, means good-bye to the simple ability to ignore something for a while. You don't want to answer your phone ? Leave it on the couch, go to another room for a minute, just ignore it, the ringtone will die at some point. You don't want to answer that blinking light in your peripheral vision ? Good luck ignoring that.
And what about sleep ? Will you be able to go airline mode and not be bothered in the night, or will you not have a choice and wake up groggy at 3 in the morning with that bloody blinking light in your peripheral vision ?
Whatever the level of tech of this brain implant technology, I'm sure there will be people who try, and I'm sure the majority won't.
A phone, for all its faults, is something you can turn off. Sometimes it feels good to be able to turn off.