Hi, I am taking my iPhone 6S+ to an Apple store for possible battery replacement. According to Apple, we should backup the phone, log out from Apple ID account and reset it to factory settings to protect our personal information before giving it out. Without a Mac, what is the best way to backup the phone so that I could recover it to the current state after getting it back from Apple? I only have a Windows PC and no plan to pay for iCloud. Currently I have used about 95GB of storage.