I recently ran into a serious problem with my iPod touch: it would not charge. IPhone owners have had similar problems. However, before you make that trip to the Apple Store, or worse, give up and order a new device, maybe the simple solution that worked for me will also help you.
I first noticed the problem when I had plugged in my iPod touch to charge it overnight. In the morning, instead of being all charged up, it was dead as a door nail. I tried replugging it again, nothing. But when I plugged it into the USB port of my laptop it charged okay. I thought maybe the electric socket or the charging plug was bad.
But next time I had to recharge the problem was still there, only this time the USB charging option did not work. I tried swapping out the lightning cable with the one from my iPad, no change: the cable was okay. I tried using the iPad charging plug, still no charge. Went back to my original cable and plug, and tried different plugs in the house - finally it was able to charge.
But each charge was an adventure. Normally, you'd plug it in to charge, and there would instantly be a "ding" and a message that the device was charging. Sometimes, it wouldn't charge at the beginning, but then charge a little later. Or, really weird, it would charge but periodically "ding" on and off throughout the charging cycle!
Doing further research, it seemed this was not an uncommon problem for iPod touch and iPhone users. I tried a few things, but restarting or resetting my device did not help.
But here is what did work: I took a wooden toothpick and gently poked out all lint that had accumulated in the lightning charge port. Like many guys, I carry my device in my pocket, and over time, the exposed lightning port slot had accumulated a good amount of lint. I was surprised at the amount I was able to pull out of that tiny hole.
I then plugged in my lightning cable to begin a charge and instantly received the "ding" charge acknowledgment. My iPod touch was back to normal charging!
My very high-tech device was brought down by a very low-tech problem: lint! The lint was preventing a clean electrical connection: hence the varied symptoms I saw.
Interestingly, what works so good in the PC world, a compressed gas duster that blows air, did not do the trick. The lightning port is so small, and somewhat deep, that the lint gets really pressed down in there - even with the compressed air the lint remained. Only with the toothpick was I able to get it lint-free.
Of course, your mileage may vary, but lint removal is an easy thing to try to fix your iPod touch or iPhone charging problem.