User talk:Sajalkdas

July 2009
Welcome to Wikipedia. One or more of the external links you added in this edit to the page Mobile do not comply with our guidelines for external links and have been removed. Wikipedia is not a collection of links; nor should it be used for advertising or promotion. You may wish to read the introduction to editing. Thank you. Proofreader77 (talk) 18:04, 26 July 2009 (UTC)

Please do not add inappropriate external links to Wikipedia, as you did in this edit to 3G. Inappropriate links include links to personal web sites, links to web sites with which you are affiliated, and links that serve as advertising or promotion. Thank you. Zhang He (talk) 18:12, 26 July 2009 (UTC)

Please do not vandalize pages, as you did with this edit to GSM. If you continue to do so, you will be blocked from editing. Chevy  Impala   2009  18:14, 26 July 2009 (UTC)

This is the last warning you will receive for your disruptive edits. The next time you insert a spam link, you will be blocked from editing Wikipedia. Persistent spammers may have their websites blacklisted preventing anyone from linking to them from all Wikimedia sites as well as potentially being penalized by search engines. Oli Filth(talk&#124;contribs) 18:42, 26 July 2009 (UTC)

Adding sources
Sources should be added inside the text of the article, not by hand numbering inside the references sectionas you have done at Universal Mobile Telecommunications System. Look for references inside left and right angle brackets (<>) with ref to start and /ref to close for examples of how this works. There are references inside the articles that can be used as examples. Alansohn (talk) 16:11, 27 July 2009 (UTC)