Smartphone Crash Course

"H—How do I… What is this?" Arnold, looking bewildered at the smartphone that was in Nathalie's hands, presenting it to him.

[Artifact, if you will…]

His face began to contort in wariness as he leered at it, leaving him to stammer his words. "Never heard of that— What— What— can it do?" 

For a while, she pulled out a spare smartphone that she had to give her dad, William Pierre Quinn, for the new year's gift. But then, a crazy night happened and led her no chance even to part with a gift to him.

All she thought it might be useful to Arnold, but he had to at least know how to even use it with utmost care.

Jonathan had also installed it the same as theirs, and with this, the communication would never be a burden.

[So, this is what you need to do.]

When she pressed it, a subtle beep and a bright light flashing flinched Arnold in his stance, with his grimoire hovering beside him as his fingertip went aglow with an orb of ice.