Lucky you! I got one too, but it doesn't work. I'm on 7.1.1
I select JP Softbank, restart and then I get 0 and then 1 bar of signal for like 5 seconds. Then no service..
My phone must be coursed or something
I think you should try R-Sim 9pro or R-sim mini+(extreme/mini1)..
I have 2 iphone 5 iOS 7.1.1 Softbank fully worked using those R-Sim type..but, i'm failed (not working) when tried with R-Sim 9 Gold...
If you experience errors, you need to Reset Network Settings first, before changing to other R-Sim type..
About Chronicunlocks i think he is trusted seller, because i successful unlocked my iphone 4 16gb Softbank from him one month ago after 60 days waiting..
Goodluck!
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