Simple and Effective Messaging and more:Whatsapp

Few months ago , I downloaded this application to my Android OS phone. Actualy it is very user friendly and I realy satisfied with this application.

 

Whatsapp is very popular real time messaging software for smart phones. We can say that It is simply sort of SMS+MMS+ File Sharing and uses GSM and/or Wi-Fi.

 





Whatsapp Chat Window



It is very easy to attach some file(s) during chatting. You can specify group and chat with your friends all together. Plus, you can add emotions.

 

Deleting message history and even changing background of chat screen is nice things. Also it has "last seen". it is very noteful to control your friends they were online or not :)

Another good thing is you do not annoy with boring adds during chating.

 

Application uses your phone contacts. So you do not need to add by putting  him/her email  etc account to app.

 

In my opinion, simplicity is just coming for that reason.

Total download number is between 100milion -500 milion. So it is fantastic huge number.

On the other hand, please be aware this application is not free. Ok. it seems it is free for first dowloading from Google Play Store but you need to check account settings. It is just trial version. You have to pay and there is 3 payment options for 1 -3 or 5 years.

Anyway, I put following picture which explains how to check your paying settings. Please just follow settings --> Account --> Paying Info --> Validity

Checking validity date of application

Overall, this is very cute application. Unfortunately, I heard some security vulnerabilities if you put your SIM to another phone. http://www.neowin.net/ explains this case in more detail.

 

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User Speed Rates of GSM Technologies

Tremendous achievements of wireless world is providing more enjoyable lifestyle to us. Especially,  watching HD movies via stream is edge corner now for end users like me.

Mobile trend is growing rapidly. Following figure shows the interesting statical result from JohnHughes blog.

 Think about it, you are living with your search tool just in your pocket. You do not need to use any cable,device connection etc and you can reach internet very easly with sufficient speed generally. 

Because of the importance of smart phones, we are facing with enhancing wireless mobile telecommunication technologies day by day.

We are planning to explain actual speed rates of each technologies by starting with GPRS technologies briefly.
 

 2G technologies could not reach the Mbps speed rates unfortunately except EGPRS-2. EDGE has 237 kpbs DL speed theoretically. it varies between 120Kbps to 384Kbps practically for per user. Other name of EDGE is 2.75G.

With the introducing WCDMA, we have met superior speed rates. above picture demonstrates the performances of 3G and 4G techs.

Thi biggest issue for high speed wireless networks is the lack of bandwidth. We can say it also as range of usable frequencies. So we put following pictures from speedtest.net to compare pratical and theoretical results for user speed rates.

4G VERIZON USA
  

4G AVUSTRALIA

 4G TMO  EURO

Note: I checked the users fro this test and one user speed rate was 980.92 Mb/s within 188 total tests . I subtracted that one and recalculated the speed test and it was ~10Mbps like in Verizon USA.
 
Speed of Wireless techs has a lot of obstacles like total user, location and velocity, many type of interferences, total users  etc. But we can say , humanity has got very good achievements  about it during this decade and we can easily say that 4G is really great even though it can not be able to reach to wireline speeds at least these years.
 

REFERENCES
http://www.gsma.com/ 
http://autoblog.johnhughes.com.au 
http://www.speedguide.net/faq_in_q.php?qid=366 
http://www.radio-electronics.com/ 
http://www.speedtest.net
http://www.wisegeek.com/what-is-evdo.htm 
http://www.zdnet.com 

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