Softbank Rival to Offer SIM Card for Use in IPhone 4

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Softbank Corp., Japan’s only provider of Apple Inc.’s iPhone, is losing part of that exclusivity as Japan Communications Inc. starts offering chips that let the smartphone access another network.

Japan Communications will offer a Subscriber Identity Module, a chip that allows unlocked iPhone 4s to use NTT DoCoMo Inc.’s network, Japan Communications said in a statement today. The service will cost 5,280 yen ($62) a month for unlimited data use with a separate charge for voice calls and will be available Aug. 26 for users who reserved online, according to a statement by the company.