If you have the hands of a brain surgeon or a musician you are probably fine with the keyboard on a smartphone. If, like me, you have fingers like sausages, you will find it frustrating. Not only was I constantly hitting the wrong letter, but the screen is so sensitive that it anticipates what it thinks I want BEFORE I EVEN TOUCH IT. This little gadget has solved all that and returned me to my pre-smartphone texting speed. It's handy being able to plug it in for safe keeping, too. The 4-pack is useful so I can give one to my husband and still have spares for if I lose mine - but the way you can plug it into the phone for safe keeping means that I probably won't. The order arrived in no time at all.