“Enter PUK”

•The PIN code has been entered incorrectly three times in succession, and the phone is now blocked. Enter the PUK supplied by your service provider.

“No service,” “Network failure,” or “Not done” displays

•The network connection has been lost. You may be in a weak signal area. Move and try again.

•You are trying to access an option for which you have no subscription with your service provider. Contact the service provider for further details.

You have entered a number but it was not dialled

•Be sure that you have pressed [ ].

•Be sure you have accessed the right cellular network.

•Be sure that you have not set an outgoing call barring option.

Your correspondent cannot reach you

•Be sure your phone is switched on. ([ ] pressed for more than one second.)

•Be sure you are accessing the correct cellular network.

•Be sure that you have not set an outgoing call barring option.

Your correspondent cannot hear you speaking

•Be sure you have switched off the microphone.

•Be sure you are holding the phone close enough to your mouth. The microphone is located at the bottom of the phone.

The phone starts beeping and “Battery low” flashes on the display

•Your battery is insufficiently charged. Recharge the battery.

The audio quality of the call is poor

•Check the signal strength indicator on the display

(). The number of bars indicates the signal

strength from strong () to weak ( ).

Solve problems

59

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Samsung SGH-X640 manual No service, Network failure, or Not done displays, You have entered a number but it was not dialled
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SGH-X640 specifications

The Samsung SGH-X640 is a feature-rich mobile phone that was launched in the mid-2000s, showcasing Samsung's commitment to innovation in the telecommunications sector. This sleek and stylish device was designed to cater to the growing demand for advanced mobile features while still being user-friendly.

One of the standout characteristics of the SGH-X640 is its compact and lightweight design, making it highly portable and convenient for everyday use. Weighing just 90 grams and measuring 86 x 44 x 21 mm, this phone easily fits in the palm of your hand or pocket. Its clamshell design not only adds a touch of elegance but also protects the screen from scratches and damage when not in use.

The SGH-X640 comes equipped with a bright 128 x 160 pixel display that supports 65,536 colors, providing vibrant visuals for images, graphics, and menus. This clarity allows users to enjoy multimedia content such as photos and videos, further enhanced by its integrated camera, which features a 1.3-megapixel resolution. This camera allows for decent photo-taking capabilities, perfect for capturing special moments on the go.

In terms of connectivity, the SGH-X640 supports GPRS Class 10, allowing for relatively fast internet browsing and data transfer capabilities for its time. The phone features a WAP 2.0 browser for accessing mobile content, enabling users to stay connected to the web wherever they go. Bluetooth technology is also included, facilitating easy wireless sharing of files and media with other compatible devices.

The device boasts an impressive battery life with a standard Lithium-ion battery, offering talk time of up to 5 hours and standby time of approximately 200 hours. This lengthy battery performance is ideal for users who rely on their mobile phone throughout the day without the constant worry of recharging.

Additionally, the SGH-X640 supports various multimedia formats, making it a suitable companion for music and video playback. Users can easily download ringtones and applications, personalizing their devices to suit their preferences.

Overall, the Samsung SGH-X640 exemplifies the combination of style, functionality, and technology that defined the early 2000s mobile phone market. Its thoughtful design and impressive features make it a memorable entry in Samsung's legacy as a leading mobile manufacturer.
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