I thought it best to start a new thread with this updated official information rather than this being buried in the existing (and many) threads for this problem.
This comes from Delfin Vassallo (Social Operations Manager for Microsoft Mobile)
Please refer to this FAQ, which has a few steps.
FAQ - What to do if issues with the touch screen on my Lumia 535 and 535 Dual SIM phones? - Microsoft - UK
Needless to say, if the points in the FAQ don't fully cover you, we need to wait for further information. I was told a few weeks ago that Care Centers would be aware if the issue and would resolve, but this obviously hasn't happened effectively enough.
This comes from Delfin Vassallo (Social Operations Manager for Microsoft Mobile)
Delfin said:Hi everyone,
We are sorry that some of you have been inconvenienced by this situation. We’ve identified some models of Lumia 535 are presenting different anomalies on the touchscreen performance. It manifests itself in several ways:
• Functionality of the scroll up/down and swipe left/right functions.
• Scrolling up/down or swiping left/right can result in an app or link being activated unintentionally.
• Functionality of the zoom in/out feature can be compromised if the user’s fingers are less than 20 mm apart.
• Text editing, particularly at speed, can result in characters being missed.
• ‘Ghost touch’ - use of the touchscreen in wet/moist conditions.
• If the user’s fingers are wet or the atmosphere is damp (i.e. entering a warm room from cold outdoors) buttons on the touchscreen can be activated unintentionally.
An OTA (over the air) software update has been deployed in 23rd of December 2014, solving most of the problems but certainly not for all customers.
Our Technical Support Operations team here in Finland, as well as the engineering teams in the US and China have the matter under investigation marked as urgent priority.
When our colleagues in the engineering team have identified the cause of the conflict, we will provide further information, whether this is another software update or an action performed on hardware at an authorised Care Point, (at this time Care Points have not received updated info regarding this topic, thus is useless to visit them)
We assure you that Microsoft does take matters like this very seriously and our teams are working frantically to resolve this concern for our customers. For the time being, we can only recommend that you use the troubleshooting provided whilst we work to ensure that the situation is properly solved, and that you accept our apologies for the inconvenience caused.
Community Manager
Please refer to this FAQ, which has a few steps.
FAQ - What to do if issues with the touch screen on my Lumia 535 and 535 Dual SIM phones? - Microsoft - UK
Needless to say, if the points in the FAQ don't fully cover you, we need to wait for further information. I was told a few weeks ago that Care Centers would be aware if the issue and would resolve, but this obviously hasn't happened effectively enough.