Several problems?

[Jimmy Karlborg]

Hi everybody!
I bought an iPhone 7 with broken lcd, changed to a new one, no problems. But when I starten the phone microphone is not working, either the earspeaker.
I have the buttonsounds and can play music with Spotify.
Also the button for speakerphone is grey and not clickable.
Please help me
Best Regards /Jimmy Karlborg

 

[Atomic77]

Hmm... why did you buy the one did you know the lcd was broken?

 

[Jimmy Karlborg]

Yes, just to get a cheaper phone

 

[scifan57]

You may have inadvertently damaged something when changing the screen.

 

[Jimmy Karlborg]

That is possible, you have any idea what?

 

[scifan57]

There’s no way to tell from your description but it could be connectors or components on the logic board. Does the Touch ID still work as well as the haptic feedback?