Q: Iphone 4S

OK.

Do you have a question?

Try switching Wi-Fi networks.

Also, take a look at this Apple document -> Can't connect to the iTunes Store

Troubleshooting on an iPhone, iPad, or iPod touch

If you haven't been able to connect to the iTunes Store:

• Make sure that your iOS software is up to date by connecting your iOS device to iTunes and clicking on Check for Update in your device's Summary page in iTunes.
• Check and verify that you are in range of a Wi-Fi router or base station. If you are on a 3G capable device, make sure that cellular data is turned on from Settings > Cellular Data.

Note: If connected to 3G, larger items may not download. You may need to connect to Wi-Fi to download apps, videos, and podcasts. 


• Check to make sure you have an active internet connection. You can check the User Guide for your device for help with connecting to the internet. 
• Check to make sure other devices (portable computers, for example) are able to connect to the Wi-Fi network and access the internet.
• Try resetting (turning off and then on again) your Wi-Fi router
• If the issue still persists see, iPhone and iPod touch: Troubleshooting Wi-Fi networks and connections or iPad: Troubleshooting Wi-Fi networks and connections.

Note: All iPhone, and iPod touch models support 802.11b/g Wi-Fi networks. In addition, iPhone 4, and iPod touch (4th generation) support 802.11n Wi-Fi networks (2.4 GHz only).