We both recently got smart watches Apple and Pixel. We use them to keep track of distances walked. We each have phones, of course, “i” and Pixel.
We are using the “Wise Pilgrim” app which is really nice. Mainly we use the map which shows the Camino path with all the variations. This makes it easy to stay on course. There are not as many yellow arrows on the Portuguese. There are two main paths, the central and the coastal. We walked the central in 2016 and now we are on the coastal. But there is a variant of the coastal called the litoral which consists of alternative routes to the coastal closer to the ocean. It can get complex.

I have the iOS version which shows where you are with a yellow arrow, as you see in the middle of the photo. Camino appropriate I guess. The Android version uses the Google blue dot. And I take my 11” iPad. For me, it is worth carrying the extra pound. And we take a lightweight Bluetooth keyboard that Wynette uses to type on her phone.
Luckily, just about everything charges with USB-C, except for my air buds and the keyboard. We purchased power blocks for European plugs which is nicer than using converters.