rob185 wrote: "Battery health is 83%. I believe it is original battery. This has never been an issue before iOS 26."
rob ~ The long process of applying a major iOS upgrade to an iPhone with an aging battery can be the proverbial "straw that broke the camel's back."
83% is above Apple's suggested 80% level for having the battery replaced. However, that % is only an algorithmic estimate — and being the original battery of an old model iPhone, it's likely weak and due for replacement.
...You can wait for suggestions from others here or contact Apple Support about the Maps issues. But if it were me, I would dispel doubts about that old battery by simply having it replaced:
iPhone Battery Service
About genuine iPhone batteries
Repair Provider Verification
(Articles found by searching Apple's Knowledge Base.)
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