Acer liquid A1 the Earphone icon is always on screen

[Guest winlinwcn]

I have an Acer liquid A1 (S100). the sound only works when I plug the earphone. The headphone icon is always shown even when I unplug them, there is no sound when I play MP3 or receive a call unless I plug the earphone .

Anyone faced the same problem and fixed it? please share.

I think it's a hardware problem because , I tried factory reset, and reinstalled different roms, but still the same problem.

I resold the earphone jack still same problem, the rear speakers aren't faulty, because when I receive a call and choose "speaker" i can hear well, however speakers doesn't work when i play mp3 or videos, and front speakers aren't working when i receive a call.