Test your iPhone 4’s Antenna Reception

Months after debate began over the iPhone 4’s antenna design and reception, it appears there is now an easy way to test the antenna for yourself. Gizmodo is providing instructions on how to activate an iPhone 4’s “field test mode,” which replaces the phone’s signal bars with a numerical measure of signal strength.

You just need to follow these two easy steps:

• First, upgrade your iPhone 4—or any iPhone—to iOS 4.1.
• Dial *3001#12345#* into your phone.

Done. The signal bars will be replaced with a number (like -85). The more negative the number, the worse the signal is. Example: -110 is worse than -85. Once activated, you can switch between signal bars and number by touching on the number.

Try the test mode now. Then use a finger to connect the two metal bands on the lower left corner, over the black plastic strip. That will short-circuit the magical gap and bring the phone’s signal down quite significantly.

To get out of the field test mode, just hit the home button.

This test confirms earlier reports by many, including Consumer Reports, that the iPhone 4 suffers from a critical antenna design defect that causes the phone to lose signal strength when held in a typical manner.

In other news, an analyst firm in Minneapolis has concluded that Antennagate has taken a significant toll on sales of the iPhone 4. According to a telephone poll conducted by the firm,

“We found that the antenna issue has impacted the purchase of 20% of people who are aware of the iPhone 4 antenna issue,” the analyst firm said in an email bulletin.

[…]

Apple could lose up to $0.11 in September earnings per share due to the antenna issue, Piper Jaffray said.

If you own an iPhone 4, and are interested in participating in our lawsuit against Apple and AT&T, please email me at dan@wardlawdc.com. I look forward to hearing from you.

Thank you,

Dan Ward

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