How is it safe to buy a refurbished iPhone like from Amazon since the data from the previous owner could still be on the device and accessed by you?

[NoFunForMyLife]

How is it safe to buy a refurbished iPhone like from Amazon since the data from the previous owner could still be on the device and accessed by you or because the previous owner's data could become mixed in with your data or accounts, even if the device is factory reset?

 

[scifan57]

If an iPhone has been factory reset there will be no data from a previous owner left on the device. The most important thing to be concerned about when buying a used iPhone is that it is not iCloud Activation locked.