Will this fix ssd code problem on iphone 5s running ios 7.0.4 KDDI
Found this online
"FIX USSD on iPhone 4s and iPhone 5 (Sprint iOS 7.0.4)
1. Go to Cydia
2. Add repository (apt.chinasnow.net)
3. Install "CommCenter patch for iOS 7"
4. Run "iFile" and go at /System/Library/Carrier Bundles/iPhone/Default.bundle/carrier.plst
5. Click on carrier.plst and select "Viewer PList"
6. Flip through down and find the item SupportsSupplementaryServicesOver3GPP (turned it off)
7. Turn it "On" and click "Finish"
8. Reboot the device.
9. Rejoice working USSD requests.
Works on:
iPhone 5 Sprint iOS 7.0.4 + R-SIM 8+
iPhone 4s Sprint iOS 7.0.4 + Gevey AIO
iPhone 5 ATT&T iOS 7.0.4 + R-SIM 9 + patch R-SIM
iPhone 5 Verizon iOS 7.0.4 + Gevey AIO
=To install Ifile for free rom cydia, add this source
http://yuan.duowan.com/
=Go to search bar and type ifile. install the 2nd ifile from the list
=Go to Ifile and go to system/library/Carrier Bundles/iphone/Defoult.bundle/carrier.plist
=Open carrier.plist with 'property list viewer'
=Select 'ON' for SupportsSupplemenaryService
=Tap the Done button
=Restart iphone and test USSD call "