T-Mobile UK are rolling out the Lumia 800 12070 firmware update, according to customers who have received the notification. We received a few comments on our article covering the Three UK roll out last week that T-Mobile still haven't kick-started the process.
As mentioned before, depending on carriers who chose to release it, the 12070 firmware update will be rolled out to new countries on April 4th, 11th, and 18th until the update has been pushed out to every Lumia 800.
The firmware 12070 "battery fix" update will significantly improve available use between charges by optimisation to bring down the discharge rate. We noticed after updating a drop from 200mAh to <100mAh
Let us know in the comments should you also be receiving the update.
Thanks Scott for the tip!