My first "smartphone was the Samsung Duos and I mainly used it because of the 2 sim slots. I never figured out how it could have access to the internet which it should have or could.
I used it for many years since I rarely call and nothing has changed since back then.

The first mobile phone was a Motorolla it was big but easier than a "pager".

No phone numbers or messages were shown only numbers. It worked great we had a list with codes (from what groceries were needed to HELP and come home or I am late or Call). I had a great blue one.

The more modern smartphone I started with late. I never felt any need to have one since I had a small HP laptop which I could carry along in a small backpack and most important the battery lasted very long.
After my laptop broke I started using my phone for a computer and by now I can do what I want or need (and if not I let it be).

I remember there was a time the government pushed everyone into a mobile phone. It was even given for free in the package of washing detergent. That's when it started with being forced always to answer your phone (which I don't and I also leave it at home if I don't need it).

Is it important to give your children everything that you missed? Can they tell the difference if they are always provided with everything?
I tried and did partly the same but looking back I believe that it wouldn't have made any difference since whatever children want and are given they take for granted. I did not always give in and made clear how many hours of work it costs to buy something. That's where pocket money comes in and they started calculating from a young age. I do notice that two do tend to buy more easily even though there are bills to pay which are more important.
Since no one of us has a loan or is in debt with third parties at least this is positive.
Once a family member said that if he ever had children he would give them nothing except for a picture of that item and would put the money it would cost on a bank account. Back then I found that weird but by now I wonder how much money I wasted in buying so many items, toys, and trash that never lasted a lifetime and many not even one year.