When it comes to software updates on Windows Phones, there are two types: OS and firmware. OS updates can be big like some GDR releases while others can be minor, like the current 14234 build. The same applies to firmware, which usually improves some aspects of the hardware like the display or camera. Some new firmware for the Lumia 535 dual-SIM has been spotted on Navifirm, which hosts the updates before being pushed through to Microsoft's servers. The firmware version is 15114, up from 15053, which was released a few weeks ago, bringing improvements to the touch display on the Lumia 535.

What is not known at this time is the OS version and whether it is updated from Windows Phone 8.1.1 build 14234. Even if it is, it could be a minor update. Best VPN providers 2020: Learn about ExpressVPN, NordVPN & more The site WindowsPhoneApps.es has speculated that this could contain Windows Phone 8.1 Update 2. That OS revision is shipping with the new Lumia 640 and Lumia 640 XL. Update: And just like that, our Lumia 535 was updated to firmware 15114 as have a few of our reader's phones. However, as expected, the OS version did not change, meaning this is not Update 2.