Pressing home button, doesn't always wake the screenCertain times when I press home button to wake the phone, it does not wake the phone, and I have to press the home button aga...
Answer to "Mic no working for Siri on iPhone 5?"I have the same problem (iOS 9.3.5), after I replaced the battery and the Display. I recognized, that Siri and videos recorded by the front facing camera don't have sound, just static. On another iPhone 5 (iOS 10.3.3) it is working fine, so it seems that the "Front-Facing Camera and Sensor Cable" is not the cause. May be I damaged surrounding components, when disconnecting the Sensor Cable off the logic board :( Everything else is working fine.
Answer to "Why am I stuck on startup after updates?"Do You get in download mode by pressing the power button and volume down or up?
Answer to "How do I factory reset my device?"This mode is called "download mode", I think You can set it to factory settings by flashing it over odin or heimdall. XDA Developers will have some guides.
Answer to "My device is completely dead"I had same problem. I tried to change battery and dock connector, this did not solve the problem. After I changed the motherboard, it is working fine.