iPhone 4 signal fault leaves Apple 'stunned'


Apple says a fault on its new iPhone 4 is causing it to incorrectly display the phone's signal.

Users who gripped the phone on the lower left-hand side noticed the signal strength and reception fell away.

Apple says the problem relates to an error on how the signal bars are displayed, rather than the signal itself.

Daniel Emery explains.

READ MORE: Apple admits iPhone signal fault

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