iOS 15.3.1 update error message
I have an iPhone 6s I have tried to update it to the iOS 15.3.1 but it keeps coming up with this error message (I’ll attach a photo) I have removed the update and tried again, I have enough storage, I’ve tried doing it through iTunes on my laptop and I have also reset my network settings and it still won’t update! What else can I do?
iPhone 6s