Voicemail is not working on iPhone 6?

When I click on the Phone option on my phone there are five selections on the bottom of my screen that I can choose from. All options I'm able to click on and it leads me to its page but when I click on the Voicemail option nothing happens, it just stays on its current screen. Also, when people call my phone it doesn't give them the option to leave a voicemail it just continuously keeps ringing.

What should I ask for as my main present for Christmas?

I'm 12 and I don't know what to ask for for Christmas. I'm very girly, love the pink iPhone 5C, don't currently have a phone. I have a wii, and a TV and laptop. I love makeup and beauty stuff. My hair is medium legnth and I was thinking maybe some extensions? I have an iPod and a tablet, and love clothes. I also love animals, and I have been horse riding and would love my own pony. Any ideas?

Can I put an EE sim into an Orange Iphone?

So, I wanna order a used Iphone 4s off Ebay but the only thing is, it's locked to Orange and I have an EE sim. Will I be able to insert my EE sim into the phone. If not, will unlocking the phone damage the phone in anyway. It's just that I'vehad past experience where I've unlocked my phone and it's just stopped working.

Does this Christmas list sound too selfish?

-iPod Touch (I got an iPod touch four years ago but I recently lost it in September. I have an iPhone 4S, but it only has 8 GB on the entire phone to hold apps, pictures, etc.)

-Onitsuka Mexico 66 Slip On sneakers in black/white

-Supernatural calendar for 2015

-Copics markers and or Prismacolor pencils

-Samulet (it's $3 on eBay with free shipping)

-an All Time Low and Fall Out Boy poster

I was going to ask my aunt for a Warped Tour ticket since they come out around Christmas time and are twenty dollars.

My home button is rotating?

I have an iPhone 5 and I got it right after it came out. I have got it for 2 years now and I started to see some changes in it. Around 2-3 months ago I had my power button repaired because it stopped working, and now my home button started rotating both ways when ever I slide my finger on the side of it. I stuck a piece of celetape on it in case I fell out. What should I do? And can it fall out randomly? Why is it doing that?

Apple iphone 4s i'm going to explain in the additional part as there more room to write?

Apple iphone 4s
i'm going to explain in the additional
part as there more room to write?

Added (1). had my iphone 4s for a while, still looking a good clean decent phone, ios 8.1 and now when i power off a few second more it reboots and come back on again, i was shown on youtube that hold the power %home key together after the second logo went black i took my hands of and try it and it worked, 6 days later the phone was off and i seen it come on by it self so i'm back to square one again… Anyone have any great ideas

How long will the Singapore Police find a lost iPhone? Will there be a chance to find it?

I lost my phone yesterday and no calls today whatsoever. I can't contact my phone either because the battery died and if i'm not mistaken I put it on call forwarding before I lost it. My phone battery was also low and I texted a lot of times but no reply.

Added (1). P.S: My phone has a lock. And no battery so they'd have to purchase it if they want to use it. Also, I didn't connect it to iCloud.