Huawei Technologies Co. Ltd U8520-51 사용자 설명서

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Setting Phone Services

Customizing Call Settings

Your phone service provider offers different services such as 

call forwarding, call waiting, fixed dialing numbers, and 

voicemail. You can customize many of these services if they 

are part of your calling plan.

On the Settings screen, touch Call settings to customize 

your call settings.

Turning Data Roaming on

1. On the Settings screen, touch Wireless & networks > 

Mobile networks.

2. Select SIM1 or SIM2, and then select Data roaming.

Accessing data services while roaming may incur additional charges. 

Ask your wireless service provider about data roaming fees.

Switching the Data Service off

1. On the Settings screen, touch Wireless & networks > 

Mobile networks.

2. Select SIM1 or SIM2, and clear Data enabled.

Protecting Your Phone

Turning Your SIM Card PIN on

1. On the Settings screen, touch Location & security > Set 

up SIM/USIM card lock.

2. Select SIM1 or SIM2, then select Lock SIM/USIM card.

3. Use the keyboard to enter the PIN, and touch OK.