Update
Since I updated my IPhone 7 Plus last week I have been experiencing problems with Facebook, messenger and Instagram. They don’t open, the screen turns white. Can be related to the update ?
iPhone 7 Plus
Instagram is not an Apple product. Contact the app developer here --> App Support
Facebook is not an Apple product. Contact the app developer here --> App Support
Which new update are you referring to?
- iOS Update? Which Version?
- Carrier Update? Contact Carrier.
- App Update? Which App? Contact App Developer?
iOS 12.4
What was you previous iOS version, that is important, because iOS 12.4 only had the following changes. Please introspect how these changes can affect what you have posted.
Phone migration
- Introduces the ability to wirelessly transfer data and migrate directly from an old iPhone to a new iPhone during setup
Apple News
- Makes downloaded issues accessible in the My Magazines section, both online and offline
- Adds all publications in Apple News+, including newspapers, to the catalog at the top of the News+ feed
- Adds the ability to clear downloaded magazine issues by selecting History > Clear > Clear All
Other improvements and fixes
- Includes a security fix for the Walkie-Talkie app on Apple Watch and re-enables Walkie-Talkie functionality
This release also includes support for HomePod in Japan and Taiwan.