Ahoy,
Time for an update in regards the unfortunate front camera dust issue!
As noted in the recent Community News letter we have been able to verify a solution to the dust issue and it seems to be now under control in the manufacturing process so we can continue ramp-up the volume.
The front camera module is sealed with a rubber sealing to the front glass, and the sealing needs to sit properly in its place and slightly “squeeze” precisely to make it tight with the front glass. In the affected units, this very sealing either has been completely missing or it has been installed improperly, due to a manufacturing assembly error, which can be concluded the root cause for this unfortunate issue.
To fix the issue we have changed the assembly order of the rubber sealing and added a testing step in the manufacturing process to ensure the rubber sealing is not missing and that it sits properly in its place.
Due to the mechanical structure of the front camera area, and that the proper placing of the seal requires special precision assembly, the fix IS NOT feasible for DIY and we DO NOT recommend experimenting with it. This also means that we will replace the complete unit in question.
Please note the Jolla Phone as a complete unit is currently tested only for IP44 ingress protection and the front camera housing itself is not air-tight by design (for those interested, please see IEC official IP ratings). Also, there may be residual micro-particles from the manufacturing line which can be visible with a magnifying glass or in a close-up macro picture of the front camera lens. This is normal within the accepted tolerances and does not make the camera (and pictures taken with it) yet defective. Further, blowing pressurized air thru the speaker and microphone holes will lead to excessive moisture entering the front camera area and can make fog appear on the lens - this is normal as the product is not water-tight and not rated for IP6*.
To verify the applied changes are effective our CTO defined a specific Flour Dust Test in which an excessive amount of very fine grade common wheat flour is exposed (literally baked 
) to the unit. The test on purpose exceeds heavily the normal usage and IP4* test conditions. Please see below a comparison of two units after the same flour dust test:
- unit with the seal improperly in place
- unit where the seal is properly seated in its place
The process forward
We will be contacting the affected customers and will provide a replacement unit. We apologize any inconvenience this causes for the affected customers and assume full responsibility to replace affected units with a new unit.
Jolla Phone has a 2-year warranty for hardware defects. Further, should you remain uneasy about the situation or the provided solution, we have 30-day Return & Refund Policy from the day you have received your phone. No questions asked and always welcome back 
Hope these clarify and thank you for understanding that we are doing the utmost best we can to resolve the issue and with minimal impact to the overall shipping progress.
Sincerely,
Jolla