If you’re trying to use your T-Mobile cellphone, but all you can see on its screen is a request for a PUK, or PIN unlocking key, you might feel frustrated. The PUK code is a security feature, but if you’re not sure what it is, why it’s on your screen or how to find the correct deactivation code, you might be wondering what is wrong with your phone.

With the recent transition to digital television came a need for digital-to-analog converter boxes. However, some boxes came with connectors for technologies unfamiliar to the average consumer. Smart antennas automatically adjust their position and direction to gain the best reception. Writer Bio

More business are creating technological solutions to help minimize customer service costs and retain customers through an improved experience. A CRM domain is one way in which businesses can achieve these goals. Writer Bio

Like many electronic devices, Samsung TV sets sometimes include ferrite cores that you can attach to their cables. These are dense metal pieces encased in plastic that help to filter noise. This provides your TV with cleaner power and picture signals so that it can give you the sharpest and clearest picture and sound possible. Writer Bio

You can now get your phone service over a digital network such as those offered through your cable and Internet services. This is called digital phone service. You may have seen some tantalizing offers to switch from your traditional land line service. But what are the differences between these two types of phone service, and is it worth your time and money to switch? Writer Bio

While some new, high-resolution projection TV models based on DLP technology have been introduced to the 3-D home theater market in 2010-11, most projection TVs still in use in late 2011 are an older technology that doesn’t offer the sharp resolution of the newer plasma and LCD TVs. If you are getting sound from your projection TV but can’t see a picture, a variety of issues could be at fault....

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The iPod revolutionized the way we take our music with us. Lightweight, portable and capable of holding an entire music library, this personal music device defined the way we listen to music. An iPod is not limited to headset playback, though. With a little bit of knowledge about the cable connections, you can share your music with speakers, on your car stereo or on a portable playback device.

An iPod Shuffle uses its status light to alert you about various conditions with the device. Unlike other iPods that have display screens to indicate the iPod is charging or syncing with your computer, a Shuffle uses a combination of colored lights and blinking to keep you informed about what it is currently doing. Writer Bio

Whether you’re viewing an online video clip or streaming a full movie from a video on-demand service, your computer’s video player software “buffers” the video to ensure smooth playback. If another computer application shares the Internet connection, or your Internet connection speed isn’t fast enough, the video clip or movie on the video player can hesitate or pause. Writer Bio

Weak Wireless Signal Whether you’re using Wi-Fi or cellular data to access a YouTube video, the speed of your Internet service can affect video quality. If you aren’t getting a strong Wi-Fi signal, moving the iPad to the same room as the router can give you a better signal. If you’re using cellular data, moving closer to a window or door can improve the signal. In either case, look at the signal strength indicator at the top of the home screen and move the iPad into a position where the signal strength is full, and then restart the YouTube video....

Using a range extender could help you to obtain greater performance from a public, open Wi-Fi network. As long as they have the necessary security credentials, wireless extenders can generally work with all wireless networks. However, wireless extenders do not always cope well with weak Wi-Fi signals, making them less useful in areas that receive poor wireless service. Writer Bio

In 2010, 107 trillion e-mail messages were sent over the Internet. In comparison, around 160 billion pieces of mail are processed each year by the U.S. Postal Service. The widespread use of e-mail is due to several advantages, including speed and low cost. Although they are extremely common, e-mail messages do have a few disadvantages, and the traditional post office is useful even in the 21st century. The speed of e-mail can also be a disadvantage, however....

Television is an essential part of our lives. It provides us with news, entertainment and education. We also have more choices than ever, including how we receive those distant signals. Antennas receive over-the-air (OTA) signals, and may be perfect if you’re strapped for cash or just want a few channels. Cable television can be the way to go if you’re looking for plenty of diverse programming. Writer Bio

A cable phone makes use of high-speed broadband networks to transmit voice calls, while a landline phone makes use of fiber-optic phone lines. Both systems are similar in function but go about transmission differently. Writer Bio

When a Yahoo Mail account is created, you must provide a primary alternate email address for the account. The Yahoo Mail account is linked to this alternate email account. If the Yahoo Mail account is ever locked or the password is lost, you can unlock the account and reset the password using the primary alternate email address. Sometimes, you need to add another alternate email or change your primary alternate email address for mail services....

Using the “Featured Video” player in your channel, you can feature anyone else’s video that you have added to a playlist as long as the playlist is public. You can also feature an entire playlist of other people’s videos or even feature someone else’s entire channel. You can also feature multiple playlists and multiple channels. Tips Warnings Writer Bio

Enabling Asks Enabling the ask feature on a side blog works exactly the same as doing so on your main blog. Click the “Settings” icon on your dashboard, click the name of the blog for which you want to enable the feature and then enable the check box labeled “Let People Ask Questions.” By default, the title of the ask page is “Ask Me Anything,” although you can change this to anything you want; you can also enable anonymous asks, which are disabled by default....

Using a Sony Bravia TV set as a computer monitor displays the output from your laptop or desktop computer on the TV screen, providing you with a much larger display than standard computer monitor screens. Hooking up your computer to the Sony Bravia can be useful for gaming, viewing movies and photos, or for online video chats. The Sony Bravia offers several PC connection options, including a high-definition display option if your PC has an HDMI output port....

Tracfone is a pay-as-you-go prepaid wireless phone service provider. Tracfone’s cellular phones are sold all over the U.S. at bargain prices. Each Tracfone includes at least 20 minutes of airtime when you purchase it. To add more airtime, you can purchase airtime cards at many retail locations, or order the minutes online at Tracfone.com. It is possible to transfer your active phone number with another provider to your Tracfone. Writer Bio