Some tablets also have this issue. We had it with the Iconia W700p tablet line from Acer. Bubbles form at random under the digitizer (months to years, single

Some tablets also have this issue. We had it with the Iconia W700p tablet line from Acer. Bubbles form at random under the digitizer (months to years, single small bubble to multiple large bubbles). They move when heat is applied and over time, hinting that it's a digitizer glue issue as the product produces heat it is not capable of handling.