How to say “Try holding your phone a little closer to the ticket scanner; it hasn't read the code yet.” in Japanese
In Japanese
スマホをもう少しチケット読み取り機に近づけてみて。まだコードを読み取れてないよ。
Sumaho o mō sukoshi chiketto yomitoriki ni chikazukete mite. Mada kōdo o yomitoretenai yo.