Depending on where you live, a smartphone can be bought for 100 bucks and a basic line (voice, messages, 2GB of data) for less than 5 bucks. It's not ideal but it's not a sacrifice anymore.
If having a smartphone and a cellular plan will become an absolute requirement to partake in the society, carriers certainly are going to hike prices. Here in Finland, cellular plans used to be very cheap, but now the prices have been soaring after the society has become more and more reliant on the phones.
You can also use wifi. Even free wifi. You can get a very nice used phone with many years of updates for 100 dollars. You can find a worse phone for much less if you really want to.
edit: You can even get a free phone from your community. Possibly a better one than the a53. Most people have a phone or several in a drawer.