By Rey Gambe (media@latinospost.com) | First Posted: Nov 24, 2014 04:34 AM EST

It seems that update to Google's latest mobile operating system is not all lollipops and roses. At least for a number of Motorola Nexus 6 users who were issued the device by AT&T, reports the International Business Times.

Apparently, apart from having a faulty software, some pre-ordered Nexus 6 units shipped by AT&T comes with cosmetic defects including scratches and scrapes on their rear cases, added the report.

Motorola has already identified the bug on the Nexus 6, which renders the device useless because it leaves the handset with a black screen and unable to connect to a service when turned on, details Droid Life.

The report added that only the initial batch of Nexus 6 devices shipped to AT&T was problematic. "Unfortunately, this means that AT&T stores may not have Nexus 6 stocks for at least a few days."

But it's not AT&T's fault as the defective Nexus 6 units were just shipped by manufacturer Motorola Mobility, along with some that still had Android 4.4 KitKat on it, says the IB Times.

To rectify the situation, Motorola has asked AT&T to advice their customers to return the problematic Nexus 6 units and recall the ones that have yet to be shipped out, states Droid Life.

In a statement released after the Nexus 6 confusion, Motorola gave the following explanation:

"We delivered a small number of Nexus 6 smartphones with incorrect software to AT&T customers who pre-ordered (the units). The incorrect software prevents the phone from starting up properly. We will provide replacements for consumers whose phones are affected. The problem has been corrected and the phones (we are) currently shipping are fine."

Droid Life also clarified that the Nexus 6 problem is limited only to units that were shipped to AT&T, thus far, and those delivered to other carriers appear to be working just fine.

The IB Times notes that Nexus 6 also had a number of features that were previously considered for implementation but eventually taken out before the device was shipped.

The report adds that some of these features on the Nexus 6 include 'the tap-to-wake' feature but doesn't work on the device and the LED built into the unit's earpiece, which users can't interact without rooting (or gaining control to the root access) the device.

The IB Times also notes that Google's security feature, which utilizes encryption to block unwanted apps or bugs from invading Android smartphones, has the side effect of slowing down devices running on the Lollipop, particularly with accessing storage. This has already been discovered with Nexus 5 running on the latest Android mobile operating system and it is the same in other handsets running on Lollipop.

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