The frustration of dropped calls and that dreaded “no service” icon on your early Razr or Nokia if only we’d had cell phone signal boosters back then! Luckily, cell towers now dot the ...

Android: Hold down the power button, or the power button and the volume down key (depending on your Android phone), until the on-screen menu shows up, and then tap Restart. If your phone doesn't offer ...

Fabricating a proper signal generator probe is another matter entirely. [Frank]’s DIY signal generator probe does exactly what it claims to, and is very cheap to boot. After [Frank] made a ...