If Cellular Data is off, all data services use only Wi-Fi—including email, web browsing, push notifications, and other services. If Cellular Data is on, carrier charges may apply. For example, using certain features and services that transfer data, such as Siri and Messages, could result in charges to your data plan.

Turn Cellular Data on or off. Go to Settings > Cellular. The following options may also be available:

••

••

••

Turn Voice Roaming on or off (CDMA): Turn Voice Roaming off to avoid charges from using other carrier’s networks. When your carrier’s network isn’t available, iPhone won’t have cellular (data or voice) service.

Turn Data Roaming on or off: Data Roaming permits Internet access over a cellular data network when you’re in an area not covered by your carrier’s network. When you’re traveling, you can turn off Data Roaming to avoid roaming charges. See Phone settings on page 49.

Enable or disable 3G: Using 3G loads Internet data faster in some cases, but may decrease battery performance. If you’re making a lot of phone calls, you may want to turn 3G off to extend battery life. This option is not available in all areas.

Set whether cellular data is used for apps and services. Go to Settings > Cellular, then turn cellular data on or off for any app that can use cellular data. If a setting is off, iPhone uses only Wi-Fi for that service. The iTunes setting includes both iTunes Match and automatic downloads from the iTunes Store and the App Store.

Sell or give away iPhone?

Before you sell or give away your iPhone, be sure to erase all content and your personal information. If you’ve enabled Find My iPhone (see Find My iPhone on page 39), Activation Lock is on. You need to turn off Activation Lock before the new owner can activate iPhone under his or her own account.

Erase iPhone and remove Activation Lock. Go to Settings > General > Reset > Erase All Content and Settings.

See support.apple.com/kb/HT5661.

Learn more, service, and support

Refer to the following resources to get more iPhone-related safety, software, and service information.

To learn about

Do this

Using iPhone safely

See Important safety information on page 151.

 

 

iPhone service and support, tips, forums,

Go to www.apple.com/support/iphone.

and Apple software downloads

 

 

 

Service and support from your carrier

Contact your carrier or go to your carrier’s website.

 

 

The latest information about iPhone

Go to www.apple.com/iphone.

 

 

Managing your Apple ID account

Go to appleid.apple.com.

 

 

Using iCloud

Go to help.apple.com/icloud.

 

 

Using iTunes

Open iTunes and choose Help > iTunes Help. For an

 

online iTunes tutorial (may not be available in all

 

areas), go to www.apple.com/support/itunes.

 

 

Using other Apple iOS apps

Go to www.apple.com/support/ios.

 

 

Appendix D    Safety, Handling, & Support

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Apple MD271LL/A, MC319LL/A, MC536LL/A, MC918LL/A, MF263LL/A manual Sell or give away iPhone?, Learn more, service, and support
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MD271LL/A, MD276LL/A, MD635LL/A, MD655LL/A, ME493LL/A specifications

The Apple MC536LL/A, ME344LL/A, MD645LL/A, MD642C/A, and MC919LL/A are a series of devices that cater to diverse user needs with innovative technologies and robust features. Each model, defined by its specific code, offers a unique mix of specifications and functionalities.

The MC536LL/A, commonly recognized as the iPad 2, revolutionized the tablet market with its sleek design and powerful performance. It features a 9.7-inch LED-backlit display, allowing for vibrant visuals and exceptional clarity. Powered by the dual-core A5 chip, the iPad 2 delivers smooth multitasking and supports a wide range of applications, emphasizing user experience. With front and rear cameras, users can engage in FaceTime calls and capture high-quality photos.

The ME344LL/A corresponds to the MacBook Air 11-inch, an ultra-portable laptop that combines performance with portability. It’s lightweight and compact, making it ideal for on-the-go professionals. With an Intel Core i5 processor, it provides sufficient power for everyday tasks, while the solid-state drive (SSD) ensures faster boot times and quick application launches. The MacBook Air’s impressive battery life, coupled with a stunning display, makes it a go-to choice for students and business users alike.

The MD645LL/A represents the 13-inch MacBook Pro, known for its robust performance and Retina display. This model incorporates the Intel Core i5 processor, providing excellent speed and efficiency. The Retina display delivers stunning resolution, making it perfect for graphic design, photography, and video editing. Additionally, it features Thunderbolt 2 connectivity, enabling fast data transfers and wider compatibility with external devices.

The MD642C/A, identifiable as the MacBook Pro 15-inch, offers professionals powerful performance in a full-size package. This model also features a Retina display, coupled with higher-end graphics capabilities, making it exceptionally suitable for demanding creative tasks. With its ample storage and memory options, the MacBook Pro 15-inch stands out as a reliable workstation for video editing and software development.

Lastly, the MC919LL/A, which pertains to the iPhone 5, introduced a notable shift in smartphone technology. It has a 4-inch Retina display, offering enhanced resolution and color depth. The A6 chip inside enhances performance, ensuring fast processing speed for apps and multitasking. It also features an 8 MP iSight camera, allowing for high-quality photography and video recording. With the introduction of Lightning connectors and iOS compatibility, this model became a significant part of Apple's ecosystem.

Overall, these Apple products embody the brand's commitment to innovation, blending cutting-edge technology with user-friendly design. Each model is tailored to meet specific needs, making them popular choices across various consumer categories.
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