Can I still take my iPhone 5 into Apple and get it fixed if?

- My lock button rarely works and that's what I want fixed

- No warranty but isn't there a limited hardware warranty for all iPhones?
- Only had my phone for 6-7 months
- I cracked the rear microphone (between flash and camera)

I don't think they can fix those but make an appointment at the genius bar and find out! If you take a broken phone to the apple store you can get another one for like $180 so you might have to do that

Yeah you can get it fixed, but you will probably be charged for that. The warranty doesn't lies when user damage is introduced. Any user damage voids the warranty claims at the same time. But you have a choice of getting it fully replaced by a new one for $49 from AppleCare+ for the first two accidental damages. This service has been affiliated for iPhone and iPad. Hope you find this useful.