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Pre-installed software (also known as bundled software, bloatware or crapware ) is the software already installed and licensed on a computer or smartphone bought from an original equipment manufacturer (OEM).
Purchasing hardware and software together is cost-effective, and discounts are possible from OEMs on bulk orders. 
Pre-installed software commonly suffers from one or more of the following problems:
Often new PCs come with pre-installed software which the manufacturer was paid to include but is of dubious value to the purchaser. Such unwanted pre-installed software and advertisements are derogatorily called "craplets" (a portmanteau of crap and applet) and crapware. In January 2007, an unnamed executive spokesman for Microsoft expressed concern that the Windows Vista launch might be damaged by poorly designed, uncertified third-party applications installed by vendors — "We call them craplets." He stated that the antitrust case against Microsoft prevented the company from stopping the pre-installation of these programs by OEMs. Walter Mossberg, technology columnist for The Wall Street Journal, condemned "craplets" in two columns published in April 2007, and suggested several possible strategies for removing them. According to Ars Technica, most craplets are installed by OEMs who receive payment from the authors of the software. At the 2007 Consumer Electronics Show, Dell defended this practice, stating that it keeps costs down, and implying that systems might cost significantly more to the end user if these programs were not pre-installed.
Some system vendors and retailers will offer, for an additional charge, to remove unwanted pre-installed software from a newly purchased computer; retailers, in particular, will tout this service as a "performance improvement." In 2008, Sony Corporation announced a plan to charge end users US$50 for the service; Sony subsequently decided to drop the charge for this service and offer it for free after many users expressed outrage.
The practice is not limited to personal computers; mobile phones typically come with pre-loaded software provided by its respective provider; similarly to their PC equivalents, they are sometimes tied to premium services offered by the provider. The practice was extended to smartphones via Android devices, as carriers often bundle apps provided by themselves and third-party developers with the device and, furthermore, install them in such a way that they cannot be completely removed from the device without performing unsupported modifications. Some of these apps may run in the background, consuming battery life, and may also duplicate functionality already provided by the phone itself; for example, Verizon Wireless has bundled recent phones with a redundant text messaging app known as "Messages+" (which is set as the default SMS app in lieu of the stock messaging app or Google Hangouts), VZ Navigator (a subscription service redundant to the free Google Maps service).
Android 4.0 attempted to address these issues by allowing users to "disable" apps—which prevents them from running, and hides them from application listings. However, this does not remove them from the device entirely, consuming storage unless they are removed via irregular means. On its variant of the LG G3, bundled apps are not bundled with the device, but downloaded in the background upon activation; they are installed in such a way to allow certain apps to be removable. In April 2014, South Korea implemented new regulatory guidelines for the mobile phone industry, requiring non-essential apps bundled on a smartphone to be user-removable.