Between work, my car and my house I have about 8 different USB chargers and 8 different USB wall adapters for my iPhone 4S. Half of them are expensive ones I have bought from my local Apple store, and the other half are the cheapo $5 pink, orange etc. Ones you can buy at gas stations or on eBay. They All work the same. CRAPPY. Half the time they don't work, I'll plug my phone in and it will tell me "charging is not supported on this device" or it just doesn't get the little charging lightning bolt next to the battery bar to indicate anything is happening. I have woken up in the morning to an all but dead phone because the "charger" didn't work at night.
I have tried to switch out the USB chord and the USB wall adapters and it doesn't help. Why do I always have this problem? Why do I have to spend $20 every month on a new charger just to keep my phone working?