iPhone 5c 扬声器更换

Speaker doesn't work even after replacing using this guide, any idea what can be wrong? many thanks

Same here. Speaker went out. Replaced it with a new one from an Amazon seller, and still nothing. It's like I didn't do anything.

Rest of the phone works perfectly.

I just did this replacement today and had the same problem as the other posts. However what I figured out was that the speaker is powered through contact on the back side. I applied some pressure to that area (this is mostly likely bad for the screen, so try at your own risk) to the speaker area and surprise it worked. A hacky fix was to put a piece of folded up paper on top of the speaker to create the contact. I do not recommend this fix, but it help solidify the actual cause.

Hope this helps

ayechonk merci pour le tips, c'est bien un faux contact, en appuyant un peu j'ai le son, je vais testé le coup de la cale.

Does anyone know what's the actual voltage needed by the loudspeaker to work? I've tested it out the continuity of the loudspeakers (both the original on the replacing part) and they seem to work just fine, otherwise the output voltage from the motherboard on the contact while playing some music, swings quickly from 0 to 1mV.