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Can I Install Ubuntu On My tablet ZTE V9C It has 275 mb of phone storage and 512mb of ram
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Well first you have to make sure that your phone can handle Ubuntu. :-)
You can do this here: http://pdadb.net/
I looked it up for you and it's seems compatible.
Here is an instruction on how to do so: http://forum.xda-developers.com/showthread.php?t=1872752