The screen guard protector of mumbi fits like a glove on the phone. It is thick and so facilitates mounting on the display. Smaller bubbles during application are not a problem, move these best with a cloth and rub on an outer edge. Should the film have placed at an angle, you can easily peel it again and attach again. Also, the operability of the display is not affected.
Hint: It is best with a disc cleaner to clean the display (without solvent !!!) go nice warm shower. Through the water vapor in the air, the dust particles are bound and fall to the ground. Result you can attach the film without a permanently dust falls onto the display.