For me 'Journal / Diary / blog' are two separate things. There's the act of recording things that have caught your attention, things you want to think about, analyse etc and for that I still use notebook / pencil, or at a pinch, a camera. The reason is immediacy. I can scribble notes, make drawings, cartoons etc in a way that even the best electronic device can't match. I don't like doing voice memos but that's probably because I come from a visual background (ex pro snapper).

Later on, if a blog or similar needs updating, then I'll use those notes to construct it. For the last 5 yrs I've been using an iPad mini (so no Android etc although I'm sure there are equivalents) in a 'sturdy'case to do that mainly because the phone's too small and a full size iPad too fragile on a bike (ok in a car though). The limitation is the on screen keyboard which I find slower to use than a separate one but, for space reasons, I put up with. Having said that I don't do a huge amount on en route blogging. Most of the stuff I record is for later write-ups - articles, books etc.

As with other areas where there's loads of choice (which bike, luggage, GPS, tent, camera etc) there are many different ways of arriving at the same end point so don't take my methodology to be anything other than my choice. As they say 'your mileage may vary', and in my case most of it wasn't even thought out, it's just what evolved through a number of on the spot decisions. Most of the 'work' isn't in the 'data collection' but in the writing.