[NonCommercial]

Hi I was wondering if anyone could help with the White Screen issue I am having, I took my phone into a shop to get it repaired the water indication on the screen had changed to pink and they said that they will clean the device and get rid of any water damage, before I had it cleaned it would go white screen very often but now it has been cleaned it I can use the phone it only seems to do it when I have multiple apps running, I have to perform a battery pull to get rid of the solid white screen. The staff in the shop I took it to said the screen seems to be working perfectly fine and that if the clean does not fix it then I will have to have the screen replaced which I dont see will help if it is working fine. The water indicator on the battery and next to the battery are white so they have no come in contact with water.

Any Suggestions as no one else can tell me anything?
Thanks