It is unusual for this many issues to occur as a result of a fairly straight-forward battery replacement. The three minute reboot cycle just happens to be the exact amount of time between the iPhone scanning its sensors. So you're seeing the phone detecting that it can't communicate with the mic1 sensor, whereupon it reboots the phone in an attempt to reinitialize and reestablish communications.
As indicated by @flannelist's excellent Wiki article, a missing mic1 sensor would tend to indicate a problem with the charge port flex cable.
[quote]* ***PRS0*** and ***Mic1*** are generally part of the [link|https://www.ifixit.com/Parts/iPhone/Cables?q=dock|charge port flex|new_window=true].[/quote]
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* ***PRS0*** and ***Mic1*** are generally part of the [link|https://www.ifixit.com/Parts/iPhone/Cables?q=dock|charge port flex|new_window=true].
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Normally I'd recommend replacing the lightning port assembly, but it's unclear why you should need to do this after a battery replacement unless the flex got damaged in the process. By any chance did the stretch adhesive break causing you to have to pry the old battery out? Here's what you would have to do to replace it.
Again, I would usually suggest replacing the power/volume button flex cable to fix a malfunctioning power button, but again there's no reason the battery replacement should have affected it, but that's the most likely fix for the problem you're seeing. iFixit doesn't have a guide for that particular repair, but the French site SOSav does.
I'd say you should probably start out by opening the phone back up and checking any connectors that were unplugged when the battery was replaced. If no problems can be identified, then all I can suggest is replacing those two parts and reevaluate whether the problems are still there.
Hi Eppie,
It is unusual for this many issues to occur as a result of a fairly straight-forward battery replacement. The three minute reboot cycle just happens to be the exact amount of time between the iPhone scanning its sensors. So you're seeing the phone detecting that it can't communicate with the mic1 sensor, whereupon it reboots the phone in an attempt to reinitialize and reestablish communications.
As indicated by @flannelist's excellent Wiki article, a missing mic1 sensor would tend to indicate a problem with the charge port flex cable.
[[iPhone Kernel Panics|iPhone Kernel Panics - iFixit|new_window=true]]
[quote]* ***PRS0*** and ***Mic1*** are generally part of the [link|https://www.ifixit.com/Parts/iPhone/Cables?q=dock|charge port flex|new_window=true].[/quote]
Normally I'd recommend replacing the lightning port assembly, but it's unclear why you should need to do this after a battery replacement unless the flex got damaged in the process. By any chance did the stretch adhesive break causing you to have to pry the old battery out? Here's what you would have to do to replace it.
[guide|133871|iPhone SE 2020 Lightning Connector Assembly Replacement - iFixit Repair Guide|new_window=true]
Again, I would usually suggest replacing the power/volume button flex cable to fix a malfunctioning power button, but again there's no reason the battery replacement should have affected it, but that's the most likely fix for the problem you're seeing. iFixit doesn't have a guide for that particular repair, but the French site SOSav does.
[link|https://www.sosav.com/guides/mobiles/iphone/iphone-se-2nd-generation/tablecloth-power-volume/|Power & volume tablecloth iPhone SE (2nd Generation) repair - Free guide - SOSav|new_window=true]
I'd say you should probably start out by opening the phone back up and checking any connectors that were unplugged when the battery was replaced. If no problems can be identified, then all I can suggest is replacing those two parts and reevaluate whether the problems are still there.
Good luck; let us know what you find.