Buy and Install an antivirus software like AVG, Norton, Kaspersky and run a full scan to check any viruses and also scan your memory card(if any) because they have the highest chances of carrying viruses to your phone.
Buy and Install an antivirus software like AVG, Norton, Kaspersky and run a full scan to check any viruses and also scan your memory card(if any) because they have the highest chances of carrying viruses to your phone.