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TH4 Useful Android Codes (works in Samsung only)👇
No.1! *#9900#
If you dial this code on your keypad, a window will open where you can click on ‘Delete dumpstate/logcat’ to remove all junk files from your phone, making it a bit faster!
No.2! *#0*#
Dialing this code activates ‘General Test Mode,’ where you can test your phone’s basic features like sensors, touch, speakers, and color visibility all at once!
No.3! *#2663#
Dial this code and, in the window that opens, click on ‘Refresh WiFi Version.’ This will slightly improve your phone’s WiFi performance!
No.4! *#12580*369#
By dialing this code, you can check the **original date of use** of your Android phone. This feature is especially helpful when buying a second-hand phone!
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