I use an Android and fairly happy.
1. Are anti-virus really effective on mobile/cell phones? Or they still evolving?
2. How much space does Kaspersky Mobile Security uses on the phone?
3. Is it possible to install Anti Virus on Memory Card and use it perfectly?http://www.kaspersky.com/kaspersky_mobil…
“Please answer all three questions as well.”
Thanks in advance.


Answer: None.
At this point in time, they are nothing but a waste of money.
Of course, there are always those who will click anything questionable ad they see, and download any software without thought. If you are one of those types, then maybe consider a antivirus on your phone. Intelligent usage is more effective than any antivirus, for both smart phones and computers.
NEW VERSION! Norton™ Mobile Security Lite protects your mobile device against loss, theft and malware. Norton lends its anti-malware, anti virus, and security expertise to mobile. Your life and your important Stuff is on your phone. Keep it safe with Norton™ Mobile Security Lite for Android.
FREE ANTIMALWARE PROTECTION that eliminates viruses and malware before they infect your phone.
=====SM=====
1) Are there viruses for mobile phones yet? I haven’t heard of any.
2) dunno but more than you need to give
3) Chances are, yes.