Certified By Apple - Roker Lightning USB Charger Cable for Apple iPhone 6 / 6S / 6 Plus / 5 / 5C / 5S, iPad Air, iPad mini iPod Nano Touch Charging and Syncing Cord Compatible with iOS7 8 9,Fits All Aftermarket Case and All USB Car Charger Power Adapter (6.6 ft/Defender Series)

To avoid further more customer encounter defects, we have below suggestions for customers :
1, don't jailbreak your Apple devices,most of errors were caused by jailbreak
2, plug it with original Apple or MFI approved usb power adapter to charging devices
Sync and Charge.

Whether you need to transfer data or charge the battery - simply reach for this one cord and do it all.
Apple MFI Certified.

Completing rigorous Apple MFI certification ensures 100% compatibility with all Lightning connector Apple devices.
Great lengths.

the cord length is optimized for use with hard-to-get computer USB ports and out-of-sight wall chargers.
Compatible with:

iPhone 6 6s plus 5s / 5c / 5, iPad Air, iPad mini / mini2, iPad 4th generation, iPod 5th generation, and iPod nano 7th generation.