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For tools such as wireless, mobile phones, accessing the internet will work very burdening the phone. Therefore, WML markup languages used, and not HTML, because:

1. Low Bandwidth
The size of the web page, html now, about 20KB, with a 56Kbps modem speed, download a page requires about 4detik. Meanwhile, wireless bandwidth is approximately 9.6 Kbps, to download the same page with the wireless tools will need 17 seconds. WML and WMLScript is a binary code that dikodekan to the compact form before they ditransmisikan, this is to reduce the size of the file. Wireless Session Protocol (WSP), which is similar to the HTTP on the Internet with a cable, is also a binary code, with the same goal, namely to save bandwidth. Wireless Transaction Protocol (WTP), which is similar to the TCP on the Internet with a cable, not only are designed to minimize the amount of data each transaction, but also the amount of the transaction itself.


2. Quick response
WAP application environment, using the concept of scripting, which means that the distance between client and server can be avoided. ACK delivery process, also do not need to be done, because the Wireless telephony ApplicationIinteface (WTAI), has provided a repository, namely Persistent storage media used to handle services, which require response event that the user is done.

3. The view that small
Display WML small, because the use and Card Deck, so do not need many pages, such as in html.
4. Input overcome the limited facilities
Elements in the WML, made with the use, soft-key programming, the buttons are on the phone or PDA.

5. To overcome the limited memory and CPU
WAP technology, use of RAM memory may be a little application to the phone, using the cache.