Sideloading

Sideloading is a term used mostly on the Internet, similar to "upload" and "download", but in reference to the process of transferring data between two local devices, in particular between a computer and a mobile device such as a mobile phone, smartphone, PDA, tablet, portable media player or e-reader.

Sideloading typically refers to media file transfer to a mobile device via USB, Bluetooth, WiFi or by writing to a memory card for insertion into the mobile device. The term is also used to refer to the practice of alcohol consumption in between visits to licensed venues while on a night out.[1]

When referring to Android apps, "sideloading" typically means installing an application package in APK format onto an Android device. Such packages are usually downloaded from websites other than Google Play, usually through a computer. Sideloading of apps is only possible if the user has allowed "Unknown Sources" in their Security Settings.[2]

History

The term "sideload" was coined in the late 1990s by online storage service xdrive.com as an alternative means of transferring and storing computer files. In 2000 idrive.com applied for a trademark on the term.[3] Rather than initiating a traditional file "download" from a website or FTP site to their computer, a user could perform a "sideload" and have the file transferred directly into their personal storage area on the service. Usage of this feature began to decline as newer hard drives became cheaper and the space on them grew each year into the gigabytes.

The launch of Apple’s iTunes Store brought sideloading to the masses, even if the term was not widely adopted at the time. The service allowed iPod users to download content to their PCs and sideload it to their iPods. This approach was also adopted by other portable media player manufacturers.

Today, sideloading is widespread and virtually every mobile device is capable of sideloading in one or more ways.

Advantages

Sideloading has several advantages when compared with other ways of delivering content to mobile devices:

Disadvantages

Sideloading also has disadvantages:

Methods

USB sideloading

Sideloading over a standardized USB (Micro-USB) connection was an agreement come to by the OMTP in late 2007.[5] Until this time, mobile phone manufacturers had tended to adopt proprietary USB transfer solutions requiring the use of bundled or third party cables and software.

Transfer performance of USB sideloading varies greatly, depending on the USB version supported, and further still by the actual engineering implementation of the USB controller. USB is available in Low-Speed, Full-Speed, and Hi-Speed levels, with High-Speed USB transferring up to 480Mbit/s (60MB/s). However, the majority of mobile phones as of the time of writing of this article are Full-Speed USB. Of the mobile products supporting USB 2.0 Hi-Speed, the actual sideloading performance usually ranges between 1-5MB/s. However, the popular BlackBerry mobile phones by RIM and the iPods by Apple distance themselves at higher performing speeds of roughly 15.7MB/s and 9.6MB/s, respectively.[6]

Bluetooth sideloading

Bluetooth sideloading is an option that is generally only available to mobile phones and some PDAs as it is not adopted in portable media players.

Bluetooth’s OBEX/OPP profiles allow for file transfer between a PC and a mobile device. Using this option is slightly more complicated than using a USB connection as the two devices have to be paired first. Also, unlike the familiar drag and drop that is usually available via USB, Bluetooth implementation is specific to the Bluetooth transceiver and drivers being used. Files that are sideloaded to mobile devices via Bluetooth are often received as messages, in the same way that SMS texts would be received. While these files can be saved to any storage medium, their initial location is the handset’s internal memory. As such the limitations of the internal memory have to be taken into account before beginning the sideload.

Memory card sideloading

Sideloading via a memory card requires that the user have access to a memory card writer. Audio and video files can be written directly to the memory card and then inserted into the mobile device.

This is potentially the quickest way of sideloading several files at once, as long as the user knows where to put the media files.

The practicality of this solution varies between different mobile devices according to the accessibility of the memory card. On many devices the card can be hot-swapped via a slot on the side of the devices. In other cases, the card is located under the battery and so the device must be first switched off and the battery removed before the transfer can take place.

See also

References

This article is issued from Wikipedia - version of the Saturday, May 07, 2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.