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Are "USSD" engineering codes should work on ANY smartphone?

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I personaly have Xiaomi Mi 9 SE. My family members have different smartphones but htey are all manufactured by Xiaomi: Mi Note 9 and Mi A3. I'm trying to execute engineering code to display Bluetooth MAC-address. *#*#232337#*#* code should be able to do so. But all 3 smartphones fails: after I touch the last '*' button - the code dissapeares and nothing happens. However some codes are working: *#06# and *#*#4636#*#* What I'm doing wrong?
Asked by Roman Matveev (103 rep)
Oct 9, 2020, 11:50 AM
Last activity: Oct 9, 2020, 11:57 AM