Xperia Z1からZ5までのほぼ全モデル、防水性能の「詐欺的広告」集団訴訟で50%返金
https://sumahoinfo.com/xperia-z1-z2-z3-z4-z5-users-may-get-50-refund-for-deceptively-advertised-water-proof-lawsuit