In this video you will see how to make a simple wireless power transmitter and receiver. For this project you need enamelled copper wire 0.4-0.6 mm, 2N2222A transister, 27k resistor, 9v battery and ...

Even when you can't get a cell phone signal, you can still make calls and receive texts on your iPhone. With WiFi calling, your calls and texts are routed through whatever WiFi network your iPhone is ...