ASUS - ZenTalk

Hi,I created a back up in a memory stick, once ready,I restored my phone but now,the phone can't find the back up.If I manually go to the folder,I can see the files with a different extension there.It's imperative to recover the files. How to do it?

I get the next error when trying to update to android 14. SKU WW

When I'm in a call, there is a lot of eco in my phone and on the other device.