Wednesday, January 15, 2014

Lazada launches iOS app for iPhone / iPad with RM30 voucher given to downloaders

A good news for Apple mobile devices users!

Lazada, the e-commerce online shopping website in Southeast Asia (Malaysia, Indonesia, Thailand, Vietnam, Phillipines) that is established by the famous German-based international online business incubator Rocket Internet GmbH, is going to launch their Lazada iOS app for iPhone/iPad on 16 January 2014.

Lazada online shopping website at http://www.lazada.com.my was launched in Malaysia in April 2012. Initially, they faced quite a lot of hiccups and customer complaints, particularly in year 2012. My recent 2 purchases with them (one done in year 2013, one in 2014) convinced me that they have improved a lot, because I received my goods promptly with friendly email and SMS delivery status update, and the whole buying experience is good.

Lazada has already launched their Android app in June 2013. To date, the Lazada app for Android received more than 100k installs since August 2013, but yet to hit the 500k installs target.

In conjunction with the launching of Lazada iOS app, you will get a RM30 voucher if you download the app from Apple iTunes App Store and install it on your Apple mobile device.

Click the ads below to download the Lazada iOS app.



Note that the offer is valid for 3 days only for downloads between 16-18 January 2014. The RM30 voucher can only be used via the iOS app. The terms and conditions for this promo is available after you clicked on the ads above.

Lazada plans to surprise three lucky shoppers who have made a purchase through the new app by giving away three vouchers worth RM500. This lucky draw is eligible to shoppers purchasing using the app from 19 to 31 January 2014.

For Android users, you can also download the Lazada App for Android here.

If you want to shop using the Lazada e-commerce website, please click the Lazada ads on the right of this webpage.

The pros and cons of WiFi frequencies 2.4GHz and 5GHz

Nowadays all WiFi access points (APs) or wireless network routers work on the 2.4GHz band of wireless frequency, while the newer dual-band devices also support the 5GHz band.

The WiFi standards that work on 2.4GHz band are:

  • 802.11b (speed is up to 11Mbps)
  • 802.11g (speed is up to 54Mbps)
  • 802.11n (speed is up to 150Mbps for 20MHz channel width, 300Mbps for 40MHz channel width)
The WiFi standards that work on 5GHz band are:
  • 802.11a (speed is up to 54Mbps)
  • 802.11n (speed is up to 150Mbps for 20MHz channel width, 300Mbps for 40MHz channel width)
  • 802.11ac (speed can reach 6.8Gbps with 8 antennas running at 160Mhz channel width)
For the dual-band WiFi AP or router, you can turn on either one of the frequency bands, or turn on both of them at the same time.

The pros / advantages of 2.4GHz band:
  • Has a wider signal coverage area.
  • Better penetration through walls and physical barriers.
  • WiFi b/g/n supported by all wireless devices
The cons / disadvantages of 2.4GHz band:
  • As most of the WiFi devices are using this band, it could be congested with a lot of interference if there are a lot of WiFi devices nearby.
  • Out of its 13 available channels, only Channel 1, 6, 11 are not overlapping.
  • Might get interference from microwave ovens, Bluetooth devices, wireless keyboard/mouse, cordless phones, etc. which are also operate on 2.4GHz frequency band.
The pros / advantages of 5GHz band:
  • At the mean time, few WiFi devices are using this band, so it is less congested with much lesser interference.
  • Has 23 non-overlapping available channels.
  • Supports much higher network speed with 802.11ac standard.
The cons / disadvantages of 5GHz band:
  • Has smaller signal coverage area.
  • Poor penetration power through walls and physical barriers.
  • Older wireless devices might not be able to work on this band.
  • Might get interference from radar which also operates on 5GHz frequency band.

Below is the WiFi signals detected in a shopping mall. You can see how congested is the 2.4GHz band and how clear is the 5GHz band. Congestion and interference can cause wireless connection problems such as intermittent connection lost, slow speed, unable to establish connection with AP, etc.



I am sure you will get similar result at your office or in your residence when your neighbours are also using WiFi.

If you have mobile devices that can work on 5GHz band and you have a dual-band AP/router, you might probably want to turn on both of them to get the best of both worlds.

Thursday, January 9, 2014

Auspicious dates for ground-breaking of new building construction in 2014

Here is the list of auspicious dates in year 2014 for ground-breaking ceremony (动土) of new building construction. It is produced based on the Chinese almanac Tong Shu. (Click the image to enlarge)


Bear in mind that although the Tong Shu is a compilation of Chinese astrology and calendaring studies gathering wisdom of thousands of years, we should use it wisely and rationally, but not be too superstitious on it.

You might probably be interested to also find out the auspicious dates in 2014 for:

You might probably be interested to also find out for:

Hint: Click on the "Older Posts" link to continue reading, or click here for a listing of all my past 3 months articles.