Problem:- Blackberry 8520 shows headset without headphone, Headset icon shows up when making call.
Solution:- Check blackberry 8520 jeck, if there is dust clean with electronics cleaner or change the jeck. If problem not solved by changing jeck then check diagram below and reheat, rework on this ic as shown in diagram or replace this ic. 
Blackberry 8520 headset icon solution

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