One day, Sherlock Holmes and Watson are playing tennis when Watson spots a mobile phone right in the middle of the tennis court. 

"Holmes, there's a suspicious object here!" he shouts.

"What can you deduce from this phone, Watson?" asks Sherlock Holmes with a mischievous smile.

Not to be put down this time, Watson remarks matter-of-factly, "This phone has many scratches. This shows that that the owner is pretty careless."

"The phone is not a smart phone. It has no features. This shows the owner is not tech savvy."

"The phone has the default wallpaper setup. This shows the owner is uncreative and probably a bit dumb."

"Ah, Watson!", Sherlock Holmes remarks, "This time your deductions are all correct! That last deduction really struck home. Now come on, quickly pick up your phone so that we can continue our tennis match."

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Just a little Sherlock Holmes humor to a fan from another. :lol