I did it for about 3 months while backpacking around South America in 2007 (before smartphones). I occasionally use the internet via 'internet cafes' to send a few emails and to research destinations. I kept a hand-written journal every day.
I ended up losing my camera charger too, so I had to sketch everything I saw in my journal. I got pretty good at it, and realized how much more methodical, thoughtful, and slow sketching is, compared to photography. It was an enlightening experience. I bet you treasure your journal a lot. I certainly do.
I had internet access throughout the whole trip, so I'd say it depends on where you're backpacking.
But more generally, I'm often out of the service area when I'm backpacking here in the US, so no internet for a week or more. I suppose by backpacking I strictly mean multi-day wilderness camping on remote trails, and not well-established treks between huts or campgrounds.
Do you think if you were to do the same trip today (let's assume no covid nonsense) you would use the same balance of technology, or do you think that things have become much more integrated over the last decade?