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Hello¡ I can not hear the ear speaker in calls but handsfree works perfectly even music or another sound. If i plug-in the headphones the simbol doesn’t appears neither but they work perfectly, maybe the ear speaker is broken, How can i test it? So i can attend the phone calls through handsfree or headphones but not with ear-speaker. I have replaced the battery recently, so this could be the problem. I really appreciate any kind of help Thanks

I had the same problem after I replaced an iPhone 6 battery. What had happened was the the ribbon cable to the speaker had a small tear in it - I believe from the screen opening up too far when I replaced the battery. Since you have just been in there working on the battery I would open it back up and check that cable.