To Install Non-Market Applications in android

Android phones are bounded or limited for application installation. If you want to install any kind of non-market applications from your friends or from anywhere, you must follow the process stated below,

• Go to Menu→ Settings→ Applications→ Unknown sources.

• Check “Unknown Sources”.
• Also enable “stay awake” by going Menu→ Settings→ Applications→ Development.
• Now install any kind of malicious application by browsing the browser or by using “adb install command”.