Hello, Kunal. While upgrading storage does not typically cause issues, in an iPhone it can definitely have unwanted consequences. Upgrading iPhone storage is a complex and lengthy procedure so it is not recommended especially for beginners.
App Not Compatible with this device cannot be solved unless you get a newer device or update the firmware. This device was released in 2013, I doubt there is a new version, so it seems like you're out of luck. If you want to watch youtube you can try to do so in the built in web-browser.
Hello, please ensure you have no extensions that could be causing this. Click on the little puzzle piece in the top right of your browser and disable any extensions that could be causing this.
Hello, Tanya. These sound like bootleg or counterfeit AirPods, as official Apple AirPods have no such LED, just one on the case. There isn't much you can do in this scenario, maybe contact the manufacturer.
Hello. If you opened your unit, there is no warranty anymore, so to solve this you'll need to get a Quest 2 for parts and harvest the cable from it. You can also check on eBay, but parts are few and far between since they were never sold separately. If you have a warranty contact Meta.
I used a JIS 000 driver and stripped to hell one of the screws because it was over torqued in there. I had to dremel it out. Proceed with caution when using pressure to remove these screws.