How to use an iPhone in China?

I go to China in 3 months and for a year, and my problem now all the papers are done is about my phone. I own an iPhone 5 and I wanted to know what are the differences of using it in Europe or in China? What about 3G? What about calling? What could you advise me about the phone operator? Having a new one in China or an international plan for my phone?

Can you hear the difference between AIFF and MP3?

The mp3 I'm listening to is 320 kbps, the aiff version is 1441 kbps. How would you be able to tell the difference. The only time I can tell the difference is when artists use tapes to record and Analogue equipment, the more kbps the better but when it's recorded straight from digital does it matter and what set up would you need to be able to hear the difference. I'm going to be using an audio technica ath-m50 on an iphone and Imac to listen to this. I can't hear the difference between the two and would it be stupid to waste that much space on my iphone?

How to protect your kids online?

I'm looking for a way of preventing my kids being able to visit certain websites and have more protection when 'googling' online. Ideally I would like to control the flow of internet from my home router without having to install software on laptops and other mobile devices such as iphones etc.
Does anyone have any ideas?

How to convert UTStarcom WA3002G4 to switch?

I have BSNL UTStarcom WA3002G4 ADSL Router. Recently I shifted to new location and no more want to use BSNL network. In Hyderabad, BeamFiber Network they are providing RJ-45 LAN cable where we need to enter user name and password at every new session start.
Now my query - "Is there a way to use UTStarcom WA3002G4 as router or switch" As I want to use BeamFiber net for my Desktop PC, IPhone and sometimes Laptop. UTStarcom WA3002G4 model comes with following ports. 1 Port for telephone input line, 4 Ports for LAN connection, 1 Wi-Fi antenna.
Kindly suggest some way to do, as this saves me some bucks!

Mms issues on unlocked iPhone 4 for tmobile?

Anyone having this issue? I haven't been able to send/receive pictures for a month now.
i've tried every thing on the internet for the past hour, still nothing.
changed my apn settings, reboot, etc etc.

Help

Added (1). Yep… Tried all of that too

Added (2). I just tried the video. It WORKED.