Interesting question. What I experienced after iOS on Apple devices is that there is no need for antivirus, seriously. None of my friends or other people from different social positions with iPhones that I used/asked, none of them had anti-virus. Can’t tell about android, more over on android devices after 6 months of personal daily usage I understood that 3 or 6 GB of ram memory will not make a difference, micro lags will be present. Menu option with system cache clean or free memory from the phone is absolutely useful. Only one smartphone I liked and use now, even that I can afford Apple device, that is their newest flagman from Xiaomi and one from Huawei that I made a present for girlfriend. I have cool cases and other gadgets never knew they exist, all thanks to this amazing website GadgetGuide India that changed my view for 180 degrees.