very useful secret codes for all mobile phones

Hi friends in this video I'm going to show you
"very useful secret codes for all phones"
➡➡ to Make Touch Switch at home

➡➡ to Make a Rubber Band powered Car - Air Car

➡➡ to Make a Water Level indicator Alarm at home

➡➡ to make powerful water pump

➡➡ to make a mobile phone cctv

➡➡ to make a cctv use android phone

➡➡ to set and use digital blood pressure machine

Please like share comments and subscribe our channel for next video

Thanks for watching.

very useful secret codes for all mobile phones