If what @oldturkey03 said did not fix it and your phone still has some battery life left go into Settings > Device Health > Scroll down to the bottom and select diagnostics > Battery Status. If your battery health is bad, you might bring it to a shop, or repair it yourself, iFixit sells lots of great kits for this type of thing (they don't sell one for the AO1 to my knowledge).
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If what @oldturkey03 said did not fix it and your phone still has some battery life left go into Settings > Device Health > Scroll down to the bottom and select diagnostics > Battery Status. If your battery health is bad, you might bring it to a shop, or repair it yourself, iFixit sells lots of great kits for this type of thing (they don't sell one for the AO1 to my knowledge) it also could be a charging port issue like @oldturkey03 said and if you don't know what's causing the issue for a fact maybe bring it to a Samsung shop or your carrier if they do repairs.
If what @oldturkey03 said did not fix it and your phone still has some battery life left go into Settings > Device Health > Scroll down to the bottom and select diagnostics > Battery Status. If your battery health bad, you might bring it to a shop, or repair it yourself, iFixit sells lots of great kits for this type of thing (they don't sell one for the AO1 to my knowledge).
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If what @oldturkey03 said did not fix it and your phone still has some battery life left go into Settings > Device Health > Scroll down to the bottom and select diagnostics > Battery Status. If your battery health is bad, you might bring it to a shop, or repair it yourself, iFixit sells lots of great kits for this type of thing (they don't sell one for the AO1 to my knowledge).
If what @oldturkey03 said did not fix it and your phone still has some battery life left go into Settings > Device Health > Scroll down to the bottom and select diagnostics > Battery Status. If your battery health bad, you might bring it to a shop, or repair it yourself, iFixit sells lots of great kits for this type of thing (they don't sell one for the AO1 to my knowledge).