On your iOS device, go to Settings > General > Device Management and "Trust" the certificate associated with your Apple ID. Why use iFile on iOS 9.3.5 today?
iFile IPA for iOS 9.3.5: The Ultimate Guide to File Management ifile ipa ios 9.3.5
Your device will restart the UI, and the iFile icon will appear on your home screen. Method 2: Sideloading the iFile IPA (No Jailbreak) On your iOS device, go to Settings >