User talk:200.113.19.21

May 2014
Hello, I'm 331dot. I wanted to let you know that I undid one or more of your recent contributions to IPhone (first generation) because it did not appear constructive. If you would like to experiment, please use the sandbox. If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page. Thanks! 331dot (talk) 19:20, 6 May 2014 (UTC)

April 2019
Please refrain from making unconstructive edits to Wikipedia, as you did at Organisms involved in water purification. Your edits appear to constitute vandalism and have been reverted. If you would like to experiment, please use the sandbox. Repeated vandalism may result in the loss of editing privileges. Thank you. aboideautalk 18:33, 8 April 2019 (UTC)
 * If this is a shared IP address, and you did not make the edits, consider creating an account for yourself or logging in with an existing account so you can avoid further irrelevant notices.