NOKIA has confirmed that its flagship smartphone for the key American market, the Lumia 900, has been introduced with a software bug that can prevent users connecting to the internet.
The Windows Phone device was introduced on Sunday and early indications suggest it has received a warm reception; topping the Amazon.com mobile phone chart and selling out in some bricks and mortar outlets.
The device is a similar to the Lumia 800 that Nokia introduced in Europe in November, except with a larger screen and 4G connectivity.
But Nokia has now confirmed a problem with memory management means an unreliable mobile internet connection for some new Lumia 900 owners.
"This issue is purely in the phone software, and is not related to either phone hardware or the network itself," it said in a statement.
The Finnish giant, which is hoping the Lumia range will herald a resurgent challenge to Apple and Android manufacturers, however said it had identified and fixed the cause, and was already manufacturing devices without the bug.
Those who buy the Lumia 900 before 21 April will receive a $100 rebate as compensation, Nokia said, making it free on contract. Their devices will be fixed by a software update available from 16 April.
The glitch is a minor setback for the launch, which is seen as vital to Nokia’s turnaround plan. Last year it controversially abandoned its own smartphone operating systems to work exclusively with Microsoft on Windows Phone devices.