To avoid oneself and others being troubled by a receiving sound of a cellphone in a conference hall, a music concert hall, or the like by shielding at least tuning received radio wave feeble compared with radio wave transmitted from the cellphone to put the cellphone with power on, into a temporarily non-receiving state to thereby prevent the emission of incoming sound or the like.

In the bag container for the cellphone formed of a metal vapor-deposited synthetic resin film, visible radiation average transmittance is 0.4 to 0.15% as the index value of a metal vapor deposition amount showing electromagnetic wave shielding property, when a synthetic resin film part of the metal vapor-deposited synthetic resin film is transparent, and when the cellphone is inserted in the bag container, in the case received radio wave tuned to the cellphone arrives, the received tuning radio wave is weakened to the extent of not getting into a receiving state.