Microsoft Lumia 950 Troubleshooter Device slow or frozen

h3. Have you rebooted the device? * Many problems can be solved by simply rebooting the device. * Turn your Microsoft Lumia 950 off, reboot it and check whether the problem has been solved. * If you cannot reboot the device the normal way, you can also force it. To do this, hold down the power and the volume down button simultaneously until the screen goes black.

h3. Did you install the most recent device software? * Your problem may be resolved through a software update. Check if a new version of your software is available. Manual: Software update

h3. Have you tried a factory reset? * If the preceding steps have not resolved your problem, try doing a so-called 'factory reset'. * *Let op:* A factory reset involves deleting all personal data on the device, such as photos and messages. We recommend you create a backup before trying this. * See the below instructions. Manual: Restore factory settings