Description of parameters in the brew mobile phone (below)

5. Network Information
Mobile phone network information generally includes two aspects: telecom network information and Internet information. Telecommunications Network Information refers to IS-95A, IS-95B, CDMA 1X, EV-DO, UMTS and so on, at the same time specify the corresponding wireless frequency 800 MHz, 1500 MHz, 1800 MHz, MHz and so on.

Internet information includes the number of TCP and UDP supported by mobile phones at the same time. Early brew mobile phones support at least one TCP and one UDP connection, brew 2. X mobile phones support at least three TCP and four UDP, brew 3. X mobile phones support more connections at the same time.

6. Telephone-related information
Because brew directly provides support for telephone services on mobile phones, there are also a lot of phone-related information on mobile phones. Mobile phone manufacturers can provide different phone ringtone formats and classification standards, and provide different phone book recording formats and capacities. However, they generally need to provide corresponding header files for instructions.

The mobile phone also needs to provide whether to support the call record service, the service when the mobile phone is on/off, whether to support the call processing service, and whether to support the interaction between BREW and other applications. For example, brew calls WAP, MMS calls brew and so on.

7 hardware support
Generally, mobile phones have a flash-based file system, while early mobile phone storage was based on EEPROM. If the mobile phone has other special services supported by hardware, it is best to display it in the brew function of the mobile phone. For example, whether GpsOne is supported, whether slide or flip events are supported, whether camera services are supported, whether game controllers are supported, and whether External keyboards are supported.

Camera has become one of the essential features of mobile phones. Compared with traditional digital cameras, which are large in size and inconvenient to store, accept, and transmit, mobile phone camera is more convenient and flexible, and can transmit images, photos, and videos (for example: bluetooth, infrared, email, etc. Moreover, with the development of mobile phone hardware and software, the performance of mobile phone cameras will be greatly improved, and even in some aspects, traditional digital cameras can be completely replaced.

Bluetooth is a widely used near-distance wireless technology. If a mobile phone supports Bluetooth, it is also supported by brew.

8. Software Support
Software Support in mobile phones first refers to the degree of support for APIs in the brew SDK. If it is not supported by some APIs, it must be verified with the carrier's mobile phone specification first, then, list the known issues and try to solve them.

Various mobile phone services should also be clarified, such as whether screen protection is supported, whether the wallpaper service is supported, and whether the user standby interface of the uione technology is supported.

Pre-installed applications (mainly dynamic pre-installed applications) or self-started applications should also be listed.

9 multimedia support
Multimedia services are very important in mobile phones and also an important aspect of special mobile phones. Mobile phone manufacturers should specify the audio file formats supported by mobile phones: Midi, MP3, qcp, PMD, EVRC-B, smaf, phrase, AAC, AAC +, ADPCM, and so on.

MMF (smaf format) is used to add voice effects to the Midi platform. MMF is a file in smaf format, smaf is the abbreviation of syntheticmusic mobileapplication format, and is the multimedia data format developed by Yamaha. The smaf specification is defined as a multimedia document format that can be played on a portable splitter. Compared with standard MIDI documents of the same type, smaf has the advantages of small size and strong performance. In fact, MMF is a type of MIDI file. In essence, the working principle of MMF is similar to that of Midi. PMD (cmx format) allows a file to contain text, images, animations, and sounds. All these elements are integrated into a small file and can be transmitted between handheld devices. The PMD file contains audio and/or video. Brew2.x or a later version can play the PMD files of mixed audio and video. brewi. X can only play audio files. You need OEM support to play the PMD file on your mobile phone.

The same is true for image files. The formats of image files include JPEG, BMP, BCI, cmx, and PNG. When PNG is used to store a grayscale image, the depth of the grayscale image can be up to 16 bits. When the color image is stored, the depth of the color image can be up to 48 bits, it can also store up to 16-bit Q-channel data. PNG uses a lossless data compression algorithm derived from lz77, with streamability reading/writing performance. The image file format allows continuous reading and writing of image data, this feature is suitable for generating and displaying images during communication. At the same time, the display feature of successive approximation enables the image to be displayed on the terminal while the image files are transmitted on the communication link. After the entire outline is displayed, the image details are gradually displayed, that is, first display the image with low resolution, and then gradually improve its resolution.

 

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