Chosen Solution

While I was replacing the battery, the connecting black ribbon has been cut. I think it was for the front camera and the speaker. You can see from the photos. Is that enough to replace the front camera/speaker?

do you mean cable or ribbon, if you mean the cable that goes from the charge flex then no you will need to buy a new charge port, any of the ribbons are sold seperately

There may be someone selling this cable, however the upfront equipment and process cost needed to replace the cable alone will exceed the cost of the phone, therefore it is not economical to buy just one cable unless you are refurbishing screens commercially.

Remove the camera & speaker flex. It looks like it could be that one. As the smaller one is for the home button, and the other one which isn’t cut, I think is for the LCD. If that part of the cable is from the camera flex, then you need a new front camera. If it’s not, then you’ll need a new LCD. You won’t be changing the LCD flex without any proffesional refurbing kit.

Dear Daniel, Thanks for your reply. I think it is ribbon, please find the below screen shot.

I found some parts on the spare parts categories. Is the below link is it for my problem? iPhone 6s Test Cable for LCD Screen and Digitizer