Phones and tablets have current sense, the ammeter advertises itself as a thermometer, named as pmi-ibat-lvl (0 or 1; battery voltage is pmi-vbat-lvl). You could connect an OTG cable and run a load, though any readings will include system usage also.
	
	
	
	
	
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					Ammeter
				 
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		04-29-2025, 03:33 PM 
	
	 
	
		(Why do they misuse a standardised *temperature* interface for such things?  
	
	
	
	
 )It looks fairly exotic and I could (quickly) only find https://www.reddit.com/r/Mi9T/comments/c...mperature/ (for XIAMI)… If these sensors are visible in the phyphox “Device Info”, you could build your own experiment to display the data. I have recently done this for TVOC sensors, https://phyphox.org/wiki/index.php/TVOC (requires version 1.2, currently in beta).  | 
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