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After updating to ios 13 my speaker is not working, also i am unable to call anyone. And some times even if i am able to call then i cant hear the person on the other side. Rest my phone works ok. Please suggest wat i need to replace and can i do it my self.
You won’t like the answer, since there are little doubts you have an audio IC issue and there’s nothing you can do on your own to fix it. Problems may be silent for some time, until picture is changed by a reboot or an upgrade that trigger a check and it gets noticed by the system that something is acting in an unexpected way. Audio IC issues are caused by flexing or falling of the iPhone 7 and need to be repaired by a reputable microsolderer, not a DiY repair.
