Oh, you sat through the whole story? I gave up after three episodes or so.
I mean, as you say, it's just very bland and I didn't feel it was worth my time. But I feel like if they had focused on the power of a magic smartphone in a fantasy world it could have been a really cool show.

Also, yes, it seems isekai is the big trend right now. Not that I mind in general, but it doesn't always go well..