I am currently using Lumia 535. I think the touch screen issue is due to improper grounding of the charger or power socket. When you use power bank to charge, the problem won't surface until you use AC charger to charge. Overall this Lumia is good, won't feel slowdown although using Snapdragon 200.

Did someone notice that Celcom sometimes shown H+ but phone cant go online. Don't know is my Lumia 535 problem or Celcom... I don't remember while I using Maxis got this problem...