please help me,why R SIM AIR2 no show model and OS?

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please help me,why R SIM AIR2 no show model and OS?.my phone is JP SOFTBANK 4S, i put R SIM AIR2,only see select carrie,and i touch JP softbank,and just show must restart phone.not show model for IP5 or IP4S,and not show IOS6.IOS7.but not unlock it,what preblem,please help me

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