After the report published by Consumer Reports about the iPhone 4 antenna problem, it seems, Apple has taken the issue a bit more seriously. After the iPhone 4 press conference last week, Apple has posted a few new pages on the issue in its website including, new antenna performance page. The page highlights how several other smartphones experience similar attenuation (decreases of signal bars) to that of the iPhone 4.

The performance page initially featured smartphones of Research in Motion (RIM), HTC, Samsung, and it’s own iPhone 3GS. Recently, Apple added the Nokia N97 mini to the page. It looks like, Apple has no plans of stopping, Apple has posted signal attenuation video of Motorola’s recent release Droid X in the page and also in the YouTube site. The description on the video reads:

In our tests, the Motorola Droid X dropped from 3 bars to 0 bars when held in a way that attenuated the signal.

Droid X, a Google Android phone, has been seen as the latest and strong competitor for the iPhone.

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Apple’s latest antenna target – Droid X

Now, it is HTC, who is suing Apple in response to a patent infringement lawsuit filed by Apple in March.  HTC, a Taiwan based smart-phone manufacturer, makes phones based on Google Inc and Microsoft Corp software.

In the lawsuit, HTC is accusing Apple of infringing five HTC patents but, didn’t specify the patents by names. HTC has asked the ITC, a U.S. trade panel that investigates patent infringement involving imported goods, for a halt of the importation and sale of the company’s popular mobile devices.