> Now try to take pictures on holiday > I prefer a few 256 GB microSD-cards

My immediate reaction to this is, "holy crap!"

Using a 12MP camera, each image you take would roughly be 2-3MB. Assuming the higher end of 3MB (and only 230GB available per card), that's ~79,000 photos per card.

Since "a few" typically means three or more, let's assume three, that's ~240,000 photos. If it's a typical holiday/vacation, that's likely 2-3 weeks -- let's assume it's three, which comes out to be 21 days. Achieving ~11,000 photos per day during a holiday is quite a feat...

I'm pretty sure they are taking a few 4k 60fps videos as part of that holiday, and those eat space like it's nothing.

More rough napkin math...

A second of 4k60 video is ~7MB, but we'll overestimate to 8MB (though I'm using really rough metrics here). At 690GB (230 x 3), that's ~86,000 seconds. Or, more familiarly, about 24 hours of 4k60 video (holy cannoli, Batman!). I guess that's about an hour's worth of video recording every day over a three-week period. Understandable, and more doable, though still really excessive.

And when you turn it into a more realistic scenario (~1 hour video/day - something I'd almost never do with my iPhone but often do with my Pixel), it's hard to imagine not having access to WiFi throughout the week. Even the hotels/apartments with really poor connection seem to have no trouble uploading the photos/videos throughout the night.

Actually, I'm lucky to work remotely, allowing me to travel around in Asia on a pretty much weekly basis. I'm currently in Thailand where they offer free, unlimited data (accessible pretty much anywhere) for only $9 for a month. I was also recently in Vietnam where the WiFi at all the hotels were crazy fast. A great thing about my national SIM card is also that in most western countries, I'm free to use it as much as I want with no extra charge. So far I haven't had any connection problems anywhere during my travels in Northern Europe, Asia and USA.

I've yet to encounter a situation where I ran out of storage (and I take thousands of pictures and a few videos whenever I visit some sightseeing place). Sometimes I even go 2-3 full battery charges (using powerbanks) where all the battery is spent on photos+chatting+uploading, and as long as I click 'free up device storage' under the Photos app then I'll never get maxed out.

Another great benefit of this is that I can easily use great phone covers like LifeProof without having to deal with removing and adding the cover (this is truly a pain in the ass when using the LifeProof cover - not sure if there are any other great and slick phone covers that makes it easier and convenient to take it off/on while also providing great protection for the phone). In any case, I can't imagine ending up in a situation with no wifi, no data, and the need to take more than 2k photos before obtaining access to decent internet, and I'd like to think that I have traveled a lot, especially in underdeveloped countries and cities.

> It takes just 10 seconds to swap it out and put in a fresh new one.

Just don't be too fast if you have an S7 or S8, lest you lose the SIM in the integrated tray :-)