Frequently Asked Questions
Which device your mobile belongs:
Which file you shall download:
JAR VS JAD
WAP
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What is J2ME (Java 2 Micro Edition)?
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Java Platform, Micro Edition ( Java ME, formerly J2ME ) provides a robust, flexible environment for applications running on mobile and other embedded devices-mobile phones, personal digital assistants (PDAs), TV set-top boxes, and printers. Java ME includes flexible user interfaces, robust security, built-in network protocols, and support for networked and offline applications that can be downloaded dynamically. Applications based on Java ME are portable across many devices, yet leverage each device's native capabilities.
What is Symbian?
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Symbian OS - Symbian's advanced open standard operating system for data enabled mobile phones. It includes a multi-tasking multithreaded core, a user interface framework, data services enablers, application engines and integrated PIM functionality and wireless communications.
Symbian Connect - The PC-based Symbian Connect is a system for data synchronization, file management, printing via PC, application installation from a PC, and other utility functions allowing Symbian OS phones to integrate effectively with PC and server-based data.
Symbian Developer Network - The developers' support network for Symbian OS, where you will find all the resources to enable you to develop world-class applications for Symbian OS phones.
What is Palm?
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A palm, when used as a unit of length, is usually four digits or three inches, i.e. 7.62 cm (for the international inch). The width of an adult human male palm is indeed about 10 centimetres.In English this unit has mostly fallen out of use, as do others based on the human arm: digit (1/4 palm), finger (7/24 palm), hand (4/3 palms), shaftment (2 palms), span (3 palms), cubit (6 palms) and ell (15 palms).
What is Pocket PC?
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A Pocket PC is a computer in a handheld size that runs a variation of the operating system Windows CE. It has many capabilities of modern desktop PCs. Currently there are thousands of applications for Pocket PC, many free. Some of these devices, running Microsoft Windows Mobile 2003 Phone Edition, also include mobile phone features. Pocket PCs can also be used with many other add-ons like GPS receivers or barcode readers.
What is Windows Mobile?
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Windows Mobile is a compact operating system for mobile devices based on the Microsoft Win32 API. Devices which run Windows Mobile include Pocket PCs, Smartphones, and Portable Media Centers. It is designed to be similar to desktop versions of Windows.
Which file you shall download:
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Jar
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A compressed file format for storing all the resources (as class, image, and sound files) that are required to install and run a Java program in a single file. Here you shall download JAR file if your device is JAVA.
Jad
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JAD files are commonly used to package Java applications or games that can be downloaded to mobile phones. Jad file contains information about your application (the name of the application, the vendor name and size of the application etc.). Some of this information is also found in the manifest.mf file (which is in the jar file). Here you shall download JAD file if your device is JAVA.
SIS
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SymbianOS Installer File. Application installation archive for most any device which uses the Symbian Operating System. Here you shall download SIS file if your device is Symbian.
ZIP
JAR VS JAD
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For Java device, most applications offer two formats for downloading: *.jar and *.jad. So what's the difference between Jar and Jad?
Actually, Jar and Jad have different functions for that application. Jar (Java Archive) is an exe file and jad (Java Application Descriptor) is a descriptional file. JAR file contains the actual applications and necessary resources to run the application. JAD file contains several information elements that describe the contents of the JAR. Some key attributes include the name of the application, the vendor name and size of the application. Not all Java Applications need a Jad file, but we suggest you to download both of these files in case you couldn't install or run it without Jad file.
WAP
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1. Wireless Application Protocol: a set of communication protocol standards to make accessing online services from a mobile phone simple. 2. WAP was conceived by four companies: Ericsson, Motorola, Nokia, and Unwired Planet (today called Phone.com). The WAP Forum is an industry association with over 200 members. Symbian is a full member of the WAP Forum.
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In mobile telephony, third-generation protocols support much higher data rates, measured in Mbps, intended for applications other than voice. 3G networks trials started in Japan in 2001. 3G networks are expected to be starting in Europe and part of Asia/Pacific by 2002, and in the US later. 3G will support bandwidth-hungry applications such as full-motion video, video-conferencing and full Internet access. www.3gpp.org
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Global System for Mobile communications, the most widely used digital mobile phone system and the de facto wireless telephone standard in Europe. Originally defined as a pan-European open standard for a digital cellular telephone network to support voice, data, text messaging and cross-border roaming. GSM is now one of the world's main 2G digital wireless standards. GSM is present in more than 160 countries and according to the GSM Association, accounts for approximately 70 percent of the total digital cellular wireless market. GSM is a time division multiplex (TDM) system. Implemented on 800, 900, 1800 and 1900 MHz frequency bands.
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An open specification for seamless wireless short-range communications of data and voice between both mobile and stationary devices. For instance, it specifies how mobile phones, computers and PDAs interconnect with each other, with computers, and with office or home phones. The first generation of Bluetooth permits exchange of data up to a rate of 1 Mbps per second, even in areas with much electromagnetic disturbance. It transmits and receives via a short-range radio link using a globally available frequency band (2.4 GHz ISM band).
