回答“Speaker will no longer pair with galexy J7”Make sure it is removed as a paired device in the bluetooth device list on your J7, then try to re-pair it. Turn the device (speaker) on and wait 15 seconds and make sure there is flashing light(s) on the front. Then open bluethooth on your phone and search for it. Tap pair.
回答“How do I fix my controller stuck on G on keyboard?”Repairing the controller in this case sounds impractical. I would just buy a new controller. There is a reset button on the back of the PS4 controller you could try. There is no way to connect headphones to a PS4 directly, only through the controller.
回答“How can I remove the songs and off my iPod onto a Chromebook?”If you bought the songs on iTunes, there is no way to get them off as they are DRM (Digital Rights Management) protected to prevent stealing. For the photos and if the music is in MP3 format, it is tricky to transfer anything onto a Chromebook in my opinion. If you have a windows laptop, try it there or use a 3rd party software on windows. tldr: To transfer anything off an iPod, you basically need a Windows or Macintosh computer with iTunes installed.