Calling from Abroad

Set iPhone to add the correct prefix when dialing from another country: In Settings, tap Phone, then turn International Assist on. This lets you make calls to your home country using the numbers in your contacts and favorites lists, without having to add a prefix or your country code. International Assist works for U.S. telephone numbers only.

For more information, see “Using iPhone Abroad” on page 73.

Changing Your Voicemail Password

A voicemail password helps prevent others from access your voicemail. You need to enter the password only when you’re calling in to get your messages from another phone. You won’t need to enter the password when using voicemail on iPhone.

Change your voicemail password: Choose Phone > Change Voicemail Password.

Locking Your SIM Card

You can lock your SIM card (GSM models) so it can’t be used without a Personal Identification Number (PIN). You must enter the PIN each time you turn iPhone off and turn it back on again. Some carriers require a SIM PIN in order to use iPhone.

Important: If you enter the PIN incorrectly three times, you may need to enter a Personal Unlocking Key (PUK) to enable your SIM card again. Refer to the SIM card documentation or contact your carrier. Some cellular networks may not accept an emergency call from iPhone if the SIM card is locked.

Turn the SIM PIN on or off:

1Choose Phone > SIM PIN, then turn SIM PIN on or off.

2Enter your PIN to confirm. Use the PIN assigned by your carrier, or your carrier’s default PIN.

Change the PIN for your SIM card:

1Choose Phone > SIM PIN.

2Turn SIM PIN on, then tap Change PIN.

3Enter your current PIN, then enter your new PIN.

4Enter your new PIN again to confirm, then tap Done.

Accessing Your Carrier’s Services

Depending on your carrier, you may be able to access some of your carrier’s services directly from iPhone. For example, you may be able to check your bill balance, call directory assistance, or view how many minutes you have left.

Access your carrier’s services: Choose Phone. Then scroll down and tap the button for your carrier’s services.

When you request information such as your bill balance, your carrier may provide the information in a text message. Contact your carrier to find out if there are any charges for these services.

Chapter 25    Settings

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Apple MC603C/A, MC603LL/A, MC610LL/A, MC678LL/A Calling from Abroad, Changing Your Voicemail Password, Locking Your SIM Card
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MC603C/A, MC609LL/A, MC606LL/A, MC678LL/A, MC603LL/A specifications

The Apple MD128LL/A, MC679LL/A, MC608LL/A, MD127LL/A, and MC605LL/A are renowned models from Apple's extensive lineup of devices, primarily comprising MacBook Pro and MacBook Air systems. Each of these models showcases Apple's commitment to innovation, reliability, and performance, catering to a broad range of users, from everyday consumers to professionals requiring high-powered computing.

The MD128LL/A, also known as the MacBook Air (13-inch, Mid 2013), integrates Intel's fourth-generation Core i5 processor, leading to improved performance and energy efficiency. It features a crystal-clear display with a resolution of 1440 x 900 pixels that provides vibrant colors and sharp text, making it ideal for both work and entertainment. The solid-state drive (SSD) configuration ensures fast boot times, quick application launches, and seamless multitasking, significantly enhancing the user experience.

Turning to the MC679LL/A, this model relates to the MacBook Pro (Retina, 13-inch, Early 2013). It boasts a Retina display with a resolution of 2560 x 1600 pixels, delivering exceptional clarity and detail. The Intel Core i5 processor, alongside the Intel HD Graphics 4000, enables efficient handling of graphic-intensive applications. The integrated 720p FaceTime HD camera, coupled with high-fidelity speakers, enhances video conferencing and media consumption.

The MC608LL/A represents another variant within the MacBook Pro series, featuring similar specifications as the MC679LL/A but offering different configurations for storage and RAM. Its robust aluminum chassis provides durability while maintaining a sleek, portable form factor. The laptop's energy-efficient design extends battery life, allowing users to stay productive for extended periods.

On the other hand, the MD127LL/A and MC605LL/A are earlier iterations of the MacBook Air and MacBook Pro models, respectively. With the MD127LL/A, users experience Intel's dual-core i5 processor, ensuring efficient performance across various applications. Its lightweight design and impressive battery life make it perfect for users on the go. The MC605LL/A, associated with the MacBook Pro (13-inch, Early 2011), may be older but still offers a capable performance with its Core i5 processor, alongside a dedicated AMD graphics card, making it suitable for entry-level gaming and graphic design tasks.

Overall, the MD128LL/A, MC679LL/A, MC608LL/A, MD127LL/A, and MC605LL/A represent a significant evolution in Apple’s laptop offerings, combining advanced technologies, powerful performance, and exceptional design, thus catering to a diverse array of user needs and preferences. Whether for casual use, professional tasks, or creative endeavors, these models stand as testaments to Apple’s enduring legacy in the computing landscape.
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