Trying to find out what carrier my iphone 5c is throgh

Have you cell phone carrier ping the phone.

First, your carrier will need to process your unlock request. Then you'll back up, erase, and restore your iPhone to unlock it. Start the process: See if your carrier offers unlocking

Jail breaking is not going to do it. Used to be able to unlocke it on older iOS but not on new ones. Many services out there offering to unlock iPhones so you can switch carriers. If you have been with yours for awhile. They should be able to do it for you

You will need to get the sim pin to unlock it. You can also take it to your carrier and have it replaced or unlocked. If you try to unlock it to many times it will lock you out permanently.

Some troubles appears along with Apple releasing iPhone 6 and iPhone 6 plus.
I can't play HD AVCHD movies on iPhone 6/6 Plus. This is kinda embarrassing.
But soon, I get a solution - Aunsoft Video Converter.
http://www.aunsoft.com/video-converter-mac/

It is probably because your carrier doesn't support visual voicemail.
Check with your provider if they do, and if they do ask them to activate it on your account, be warned some providers may charge you for this service.

Try to
Check for a Carrier Settings Update by Tap Settings > General > About, Check for an iOS Software Update by Tap Settings > General > Software Update, Remove the SIM Card and reinsert it ,Allow the iPhone to acquire the network again, Reset network settings: Tap Settings > General > Reset > Reset Network Settings ,Restore the iPhone as new http://support.apple.com/kb/HT1414. if still not able to solve and need some technical guidance then follow Mac Customer Service .

May be your phone carrier is different than your sim carrier
some network companies make a contract with a phone companys
for example: your SAMSUNG phone locked on MTN network and your sim from AT&T

The new Apple iPhone 5C is very similar to the iPhone 5 both in software and hardware. The real difference between the two is their appearance.
Differently from the older iPhones 4s and 5, and the newer iPhone 5S, made of alluminium and glass, the iPhone 5C has an outside structure of polycarbonate, which makes the phone more resistant and similar to other plastic-based phones. Another big change was the color range. The iPhone 5C comes in 5 different very bright colors, only seen on iPods before.

DVDXCOPY has been shut down for many years, their are a few people still selling it knowing it can't be activated. Their were a few sites that carried activation codes that worked. In all reality its not a very good program, I started out using it and switched to DVDFAB Platinum and haven't found anything it wouldn't copy, it also shrinks long movies to fit on a 4.7 DVD.