J-Phone Co. on Tuesday issued a recall on about 380,000 of its mobile phone handsets that have defective software. Subject to the recall is the J-SH53 model, manufactured by Sharp Corp. and launched in May. The defective handsets will be repaired free of charge.

J-Phone said three types of incorporated functions, including the PostPet Internet service, will become unusable beginning in October, while the Movie Sha-mail image messaging function will be unavailable between Jan. 1 and Jan. 31.

J-Phone is a unit of British wireless giant Vodafone Group PLC. It will change its corporate name to Vodafone K.K. on Oct. 1.