Update your iPhone 5 to resume using App Store, iCloud, email, web, and other services
As of November 3, 2019, iPhone 5 requires an iOS update to maintain accurate GPS location and to continue to use functions that rely on correct date and time, including App Store, iCloud, email, and web browsing. This is due to the GPS time rollover issue that began affecting GPS-enabled products from other manufacturers on April 6, 2019. Affected Apple devices were not impacted until just before 12:00 a.m. UTC on November 3, 2019.
Update your device's software
If you didn't update your iPhone 5 before November 3, 2019, it can no longer maintain accurate GPS location or use functions that rely on correct date and time, including App Store, iCloud, email, and web browsing. You need to back up and restore using a Mac or PC in order to update, because over-the-air software updates and iCloud Backup no longer work.
Check your device's iOS version
After you update your iPhone 5, you can check to make sure that your device has updated successfully:
Open the Settings app.
Tap General, then tap About.
Look for the number next to Software Version.
The updated software version number should be 10.3.4.
Learn how this issue affects other iPhone and iPad models.
If you’ve updated your device and you're still experiencing issues, try these articles: