iphone 5 Japan KDDi i0s7 i can not send text phone is jail broken

Hi team plz help me solve my problem i have x-sim evo

i m using iphone 5 ios 7 jail broken everything working only problem is

when i recive the test i can not reply to text back same person i need to

create another message to reply

can u plz help me solve this problem?

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