Some disgruntled iPhone users are reporting problems with tiny "bubbles" on their iPhone screens.

Comments from Apple’s own discussion forums indicate the nature of the problem, with users noting:

-- “I have 5 bubbles thus far and more as showing up as the days go on”
-- “I just found one one my phone, its in the upper right hand corner under the battery icon. “
-- “I have the same issue and I’m going to be taking my phone in tomorrow to see if I can get it fixed.”

The manufacturing defect has been recognised by Apple, with the company moving swiftly to replace any handsets suffering from the problem.