RSIM 8 iphone 5 ios7 jpn au sms patch

is there a patch for RSIM 8 iphone 5 ios7 jpn au sms not sending to prefixed number (area code)? I was told that there was but i cant find one on the internet. been searching for days. i get tired of looking through my contacts to check who texted me because their numbers sometimes dont appear, even their caller ID. please help. thank you

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