Isekai wa smartphone to toma ni (+ male mc)

(I do not own the rights to isekai wa smartphone, please support the original author, Patora Fuyuhara, by buying the manga, anime, and/or the light novel. I also used translations of the novel from Jnovel club, and I don't own any of their work. In fact, I only claim ownership to the characters I added, as well as any plot I added, everything else is not mine.) After a freak accident involving some lightning winds zapping them dead, 15-year-old twin brothers Mochizuki Satou and Mochizuki Touya wake up to find themselves face-to-face with God. "I am afraid to say that I have made a bit of a blunder..." laments the old coot. But all is not lost! God says that he can reincarnate them both into a world of fantasy, and as a bonus, they get to bring their smartphones along with them! So begins their adventure in a new, anachronistic pseudo-medieval world. Friends! Laughs! Tears! Inexplicable Deus ex Machina! They set off on a journey full of wonder as they absentmindedly travel from place to place, following whatever goal catches their fancy. The curtains lift on an epic tale of swords, sorcery, and smartphone apps!