On devices with 3D Touch screens, you’ve got a slightly different option: If you have iTunes to help upgrade your phone, the instructions will be slightly different than if you’re trying to update iOS without iTunes. On your iPhone, check what Apple ID was used to get an app by following these steps: If you use iTunes (and are running a version that still shows your apps; iTunes 12.7 removed the App Store and apps), you can confirm what Apple ID was used to get an app by following these steps: If your available storage is very low, try deleting some data you don’t need like apps, photos, podcasts, or videos. To solve this problem, set your date and time to be automatically set by following these steps: This won’t delete any data from your phone. It just reverts some of your preferences and settings to their original states. You can change them back after your apps are updating again. After that’s done, you may also want to restore your iPhone from backup.