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Fabriksindstilling
Factory setting
Hi @Tbn1, and welcome to the Support Forum! 
I am a little bit unsure about what you mean with your post an how I can help you. Can you please elaborate your question a bit?
Thanks in andvance!
I think they were wondering if going back to factory settings would help with our issues with android 9. I am also wondering the same thing. I've gone back to my old samsung until this android 9 issues is resolved with the XZ1. Phone is unusable.