German Nokia Lumia smartphone owners have started to receive the latest software update known as Lumia Black, however, the rollout varies by mobile carrier.

According to Nokia, the Lumia Black update will be available for the Lumia 520, Lumia 620, Lumia 625, Lumia 720, Lumia 820, Lumia 920, Lumia 925, and Lumia 1020 smartphones.

The Lumia 520's update is "Waiting for approval" from mobile carriers O2 and Vodafone.

"Waiting for approval," per Nokia, has been defined as "undergoing final testing with Nokia, country or operator to achieve approval."

Germany's T-Mobile and Vodafone are scheduled to rollout the Lumia Black update for the Lumia 620 and is also in the "Waiting for approval" stage.

Lumia 625 owners are able to receive the Lumia Black update if they are customers of O2 and Vodafone. T-Mobile subscribers will have to wait longer as the update is also "Waiting for approval."

The Lumia 720's update is waiting approval via O2 and Vodafone. Meanwhile, O2 and Vodafone have rolled out the Lumia Black update for the Lumia 820, while T-Mobile is on hold.

Lumia 920's Lumia Black update is available for Vodafone customers, but the same cannot be said for T-Mobile subscribers. T-Mobile's rollout for the Lumia 920's Lumia Black update is "Waiting for approval."

O2, T-Mobile, and Vodafone have distributed the Lumia Black update for the Lumia 925 and Lumia 1020 smartphones.

The Lumia Black update features include the App Folder, which gives the Lumia smartphone owner the option to organize and personalize their Start screen. Nokia Glance screen 2.0 is also featured in the update and is able to monitor information in real time from calendar, emails, messages, outlook, or apps such as Facebook, Twitter, and Whatsapp, to name a few.

To check if the Lumia Black update is available, Lumia smartphone owners can go to "Settings" to "Phone update."

"Nokia Lumia Black updates the imaging experiences on your Lumia and makes using the Windows Phone even more fluid," said Samuli Hänninen, vice president of software program management for Nokia's Smart Devices business, via Nokia Conversations.

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