Has anyone else had this iphone sound problem?

I just had a really strange problem with the sound on my iphone 6s. It's fixed itself but I was just wondering if it has happened to anyone else. So I plugged my headphones in to listen to music and the songs sounded really weird. It sounded like there was an underwater effect on them? The pitch changed and it just sounded weird. I thought it was weird but i just figured that my headphones were broken. Just to make sure it was my headphones I unplugged them and played music out loud to see if it had the same weird sound. The music wouldn't play out loud. No matter how loud i had the sound up, no song would play out loud. I plugged the headphones into my moms phone to see if they would work on another phone and they sounded fine on hers. I turned my phone off and turned it back on and now the music sounds fine with and without headphones. It was just pretty weird. Has this happened to anyone else?

How do I turn off my iPhone if the power button is broken?

I have an iPhone 5 but the power button is broken and it won't turn off by itself now. I turned the auto lock to 30 seconds but it just doesn't turn off. Is there anyway to fix it or be able to turn it off. Also I can't power it down because I won't be able to turn it back on because the broken power button

How do I get my iPhone 6 to list all my contacts again?

How do I get my iPhone 6 to list all my contacts again?

Added (1). When I got my (second hand but completely wiped) iPhone 6 a fortnight ago as soon as I put my SIM in it and signed into my Apple account all of my existing contacts were there, transferred across no problem. I don't know what's changed, or what I've done but now all that's listed in my contacts is people's email addresses! How can I get the phone numbers to show up again?

AM I BLOCKED OR DID THEY PUT ON DO NOT DISTURB?

How can I tell if someone has blocked me or used do not disturb on my number? (Besides asking them)
They have an iPhone and I do as well.
Usually when I text them the message tries to send as iMessage but fails to go thru do to not having Wi-Fi and does not say delivered. I then resend via SMS and it goes thru and says delivered.

I also noticed that when I had Wi-Fi I sent a message and it went they as an iMessage but does not say delivered after hours?

Which operator do you suggest in Montreal?

I'm a student and I will landing 1st September in Montreal and I want bring a SIM card, which operator o you suggest for local and data with reasonable price in Montreal?
**I will Bring my own cellphone (Iphone 7) and I don't need cellphone**

Really loud crashing noise in earbuds?

I had my apple earbuds in (I have a iPhone 7) and the sound was at 1 or 2 and I went to my iTunes and clicked shuffle like any other night but then this ******* loud crashing/static noise played. So I thought it was the song so I quickly clicked shuffle again and it GOT LOUDER. So at this point I'm having a fricken panic attack because I thought I was being possesed (I'm not kidding I had a panic attack). Anyway can anyone figure out what happened? I'm too scared to put my headphones back in lmao

How to clean up audio and make it crisp using Adobe Audition?

So during a video interview recording, we were having trouble with our microphone and recorded the audio using the iPhone's voice recorder app. As we were reviewing our footage, we discovered that the microphone did in fact shut down in the middle of recording, so all we have now is the audio recorded from the iPhone.

Unfortunately, the iPhone was merely placed on the floor and picked up all of the background noises. The voices of the speakers have a really high reverb and it sounds like they're speaking through a fishbowl. I'm trying my best to cleanup the audio, but I'm not very familiar with the software. Will there be a way to clean up the audio and to isolate the voices of the speakers?

Can the iPhone 7 be hacked?

My phone today has been acting weird. When I use my Apple Music it is skipping songs and the songs are stopping on there own. I saw on some websites that the iPhone is virus proof. But can someone here please tell me what is going on and can the iPhone 7 be hacked.