Wife is like a TV, and the Girlfriend is like a Mobile phone...

• When at home, you watch TV; but whenever you go out, you take your Mobile phone...
• You have no money, you watch TV; but when get money, you change your Mobile phone...
• Sometimes you enjoy TV, but most of the time you only play with your Mobile phone...
• TV is free for life; but for the Mobile phone, if you don't pay, the services will be terminated...
• TV is big, bulky and most of the time, old; but the Mobile phone is cute, slim, curvy and very portable...
• Operational costs for TV is often acceptable; but for the Mobile phone it is often high and demanding...
• TV has a remote control; but Mobile phone doesn't... It should be at hand...
• Most importantly, Mobile phone is a two-way communication (you talk and listen); but with the TV, you must only listen (whether you want to or not)...

And the last, but not the least...

• TVs don't have viruses; but Mobile phones often do...