May you help me in getting a free antivirus for my phone?
Is this your phone: http://www.gsmarena.com/samsung_e250-1772.php ?
If it is I am not really sure why you would want/need one since it is not a smatphone. I do know that there were cellphone viruses for those GSM phones but there weren't that many. If you want to protect the data in your SD card then that is another thing and you could check this out: