Aaj ke time mein Android phones sirf calling ya messaging ke liye nahi use hote — banking, UPI payments, social media, aur personal data sab phone mein store hota hai. Isi wajah se mobile security ignore karna risky ho sakta hai. Malware, phishing apps, aur fake APK files ke through hackers aapka data aur paisa dono chura sakte hain. Good news yeh hai ki kuch free antivirus apps aapko basic protection de sakte hain — bina paise kharch kiye.