Lee Lup Yuen

Lee Lup Yuen is passionate about mobile phones and PDAs, as he is constantly buying new gadgets and programming them in J2ME, .NET, Symbian and AppForge. <br>He has developed commercial applications with mobile technologies like SMS, MMS, WAP, 3G video streaming and location-based services.

Latest Posts

Projecting your phone

Projecting your phone

You're doing a demo of your mobile application, or you're training your staff to use a mobile application. How best to show a group of people the screens on your mobile device?

published March 14, 2007 by

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Looking for power?

Looking for power?

Working wirelessly sounds like a terrific idea--until you run out of power for your laptop, PDA or mobile phone. Here are 3 ideas to help you work longer while on the move:Carry extra power: Bring along spare extended-capacity batteries for your laptop, PDA and mobile phone.

published March 7, 2007 by

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Newer, safer mobile phones

Newer, safer mobile phones

You may not have noticed it, but the newer mobile phones have enhanced security features to guard against malware, viruses and worms. The newer phones based on Nokia Series 60 Third Edition (e.

published February 25, 2007 by

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WAP vs J2ME for your mobile app

WAP vs J2ME for your mobile app

In my last post I compared SMS and WAP applications, now I'll write about WAP and J2ME applications. J2ME (Java 2 Micro Edition) provides a platform for you to download, install and execute programs in your mobile phone.

published February 15, 2007 by

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SMS vs WAP for your mobile app

SMS vs WAP for your mobile app

An M Files reader asked about the difference between SMS, WAP and J2ME applications, so let me start by explaining the SMS versus WAP approaches for developing a sample mobile application, say movie ticketing.The SMS ApproachFor the SMS approach, we need to develop an application that will receive SMS commands and respond via SMS.

published February 5, 2007 by

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The problems with SMS

The problems with SMS

Nowadays it's easy to develop SMS applications for your enterprise. For example, in my company, we use two-way SMS to search for a staff member by name and to get his/her phone number.

published January 29, 2007 by

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"Help!" the server SMS'ed

"Help!" the server SMS'ed

If you're managing an Internet Web site, wouldn't you like to be alerted by SMS if your Web site is having problems? Setting up a monitoring server with SMS in your data centre can be a hassle--why not consider subscribing to an external monitoring service that can monitor your Web site and send you SMS alerts?

published January 18, 2007 by

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Mobilising your enterprise in the New Year

Mobilising your enterprise in the New Year

Now is a good time to explore your options for mobilising your enterprise applications in the coming year:Mobile Devices: Borrow (or buy) some of the latest mobile devices and feel for yourself which device fits your mobile application best. The hottest devices today include BlackBerry Pearl, Nokia E61 and Ultra Mobile PC.

published December 28, 2006 by

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Where's the boss? Location-based services can help

Where's the boss? Location-based services can help

With Location-Based Services (LBS) you may track the location of a person (or vehicle) who is carrying a mobile phone. Mobile phones constantly connect themselves to the nearest GSM or 3G base station, so it's possible to determine the location of the phone by finding the base station to which the phone is connected.

published December 27, 2006 by

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Why I killed my BlackBerry

Why I killed my BlackBerry

I had great fun with my BlackBerry when I bought it 2 years ago ...Reading and sending email anytime everywhere, even while sitting on the canDocking it beside my bed so that I could monitor the overnight batch jobs.

published December 10, 2006 by

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Who needs 3.5G?

Who needs 3.5G?

(...waving my arms...) I do!3.5G, technically known as HSDPA (High Speed Downlink Packet Access), has arrived.

published November 28, 2006 by

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The better Web browser

The better Web browser

No, it's not about Internet Explorer vs Firefox. If you surf the Web on your mobile phone, here's the best mobile Web browser that you can get for free--Opera Mini.

published November 21, 2006 by

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Does size matter?

Does size matter?

As you develop your mobile enterprise application, select your mobile device very carefully -- it may ruin your chances of rolling out a really successful mobile application.Mobile phones: Cheap and easy to use, long battery life, but cumbersome for data entry, difficult to read.

published November 8, 2006 by

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