Battery abnormality occurs in 2 of 3 owning iPhones

Apple's iPhone, released on June 29th. I think that it is considerably shocked if there is an abnormality in iPhone that I bought with joyfully, but this person seems to have an abnormality that 2 of 3 cars purchased can not be fully charged. It is unknown whether this person is particularly unlucky or has problems with the entire iPhone.

Details are as follows.
2 out of our 3 iPhones have faulty batteries - Blog - WirelessInfo.com - Cell Phone Reviews and Wireless Plan Ratings

When charging the iPhone fully, these icons are displayed.


However, if the battery is not full, it will be like this.


According to Richard Baguley, this iPhone is in a state that has not been so long since it finishes charging for more than 12 hours each. According to Apple it usually seems that charging will be completed in around 4 hours, so it should definitely be full. However, although one is fully charged, the other two do not seem to be full. It seems that this is not a problem of the battery itself, the charger or the abnormality of the circuit which controls the charging, but if you use the phone, after all the problem ants are better than the normal ones, It seems that operation time is short.

This issue is also talked about in the MacRumors forum.

Battery Issues - Mac Forums

Baguley who was worried whether there are problems with only two in hand at hand is taking a questionnaire other similar abnormalities, but now if 376 of the 376 ballots are charged without problems 31% of those who took full charge, but 10% said it took more than 4 hours, 59% said it would not be charged to the end. More than half seem to feel something wrong with iPhone's battery.

The iPhone Battery Survey - Blog - WirelessInfo.com - Cell Phone Reviews and Wireless Plan Ratings

Those who heard say that if Apple replaces them, they say that they will go to exchange soon, but how does Apple respond?