A USB-A to Lightning cable is used for connecting your Apple devices with Lightning ports (such as iPhones, iPads, and iPods) to USB-A ports commonly found on computers, power cube chargers, power banks, and other devices, enabling data syncing, software updates, and charging of your Apple devices. 

Generally, a Lightning to USB-C cable offers faster data transfer and charging speeds than a Lightning to USB-A cable. USB-C technology supports higher data rates and power delivery, making it more efficient for syncing large files and charging devices quickly. However, the Lightning to USB-A cables expand compatibility with more devices using USB-A ports.

No. Using non-certified USB-A to Lightning cables with Apple devices might be risky. Certified cables have undergone stringent testing to ensure compatibility, safety, and performance. However, non-certified cables might not provide the same level of quality, leading to issues like slower charging, data transfer problems, or even damage to your devices. 

This depends. Not all USB-A to Lightning cables may have been officially certified by Apple. Check whether your cables have a "Made for iPhone/iPad" (MFi) logo on the packaging or the specifications. Cables with this logo are certified by Apple. For example, Anker 551 USB-A to Lightning Cable (1ft / 3ft / 6ft / 10ft) is an MFi-certified iPhone charger cable designed to work seamlessly with Apple devices, providing reliable charging and data transfer.

Yes, you can use a USB-A to Lightning cable to transfer data between your iPhone and a computer. These cables support data syncing and can be used to transfer files, photos, videos, etc. between your device and a computer. Simply connect one end of the cable to your iPhone and the other end to a USB-A port on your computer. Use iTunes or Finder to manage and transfer your data.