I lost the device or parts (things other than the return envelope, such as Pocket WiFi / SIM card / Cable etc...) SakuraMobile December 05, 2018 09:46 Updated Follow Please contact us immediately. Related articles When monthly fee is charged? How much is the compensation if I lose/break devices. If I forgot to return the devices before leaving Japan, what should I do? Comments 0 comments Please sign in to leave a comment.