I like these leads, but I do not use them for phones and tablets. I find them good for some of the other MANY things which use these charger leads, for us that includes Kindle eBooks, a hotspot, two insect killing bats! These things can be fiddly, especially the older style microUSB sockets which you have to get the right way round or you can damage them. I find these leads good for this type of thing where you permanently leave the little plug head IN the device all the time, then you easily attach the magnetic part of the lead when they need more power. The LED head part glows all the time, which can be annoying especially at night, not just when they are charging. It would also be good if you could buy separately more of the actual small heads, perhaps in multi-packs, then these would be perfect.