Not only can you browse the instruction manual, but you can also start the setting screen and applications from the displayed page, so you can use SO-53B more conveniently.[Caution] Please check the following contents before installation, and tap [Update] if you understand.-When using for the first time, you need to download this application.-Since it is an e-Triset (instruction manual) for SO-53B, it cannot be started on other models.・ Packet communication charges may apply when downloading or updating applications. Therefore, we strongly recommend using the packet flat-rate service.(Download capacity: about 3.5MB)