How to make the update badge on my 'Settings' icon to go away?

I have an iPhone 4, and I don't want to download iOS 7, because I heard it doesn't run well on the 4. The little red dot with the number 1 is showing up on top of the icon, indicating iOS 7 is available.

In Settings, you can customize which apps you want badges to show up on, but there's no option for the 'Settings' app itself.

Is there any way I can make it go away?

I want to sell my iPhone to gazelle?

I want to sell my 16gb iPhone 4S, I found the website "gazelle" but I'm worried it's a scam. It's the only website I found that will send me a check, and that didn't seem like an untrustworthy website. Suggestions?

My iPhone keeps randomly playing music? - 1

I have an iPhone 5 and recently I updated it to the IOS7. Today while I was on Netflix, Siri suddenly appeared and then I exited and music started playing. This is happening every 5 to 20 minutes. I tried turning my Siri off but voice control appears! I'm not clicking anything and I've never had this problem before. I also tried turning my phone off and on but my music still randomly played. What's going on and what can I do?

Would you choose the iPhone 5 or 5s?

I know the iPhone 5g will be obsolete but I like how Apple designed it compared to 5c. I already have an s4(Samsung galaxy 4) I want another one but is the 5s worth it? Or should I get the 5g?

Should I continue saving for a car or buy an iphone 5s?

I'm 17 years of age and I've been saving ever since I started working last year, I've saved 2, 000 dollars so far and I wanted to put it towards my car for when i turn 18 next year. Because lets face it, my dad isn't going to just hand me keys to a good car, or a car isn't going to magically fall out of the sky for me. Neither is a new phone, now the iphone 5s is about 1, 000 so half of my savings. I don't know if i should continue to save for something better, or get what i deserve now rather than later, By the way I have a 4s but the screen is broken