Ive had my phone for about 4 months, had about 3 differnet chargers and never had this problem.
My phone doesnt charge, but it wont turn on, not even the battery drained symbol, i havent dropped my phone either.
ive tried putting my phone into DFU mode aswell.
Im wondering if you will offer any help?
If it has some charge try restarting
Hold down the Sleep/Wake button and the home button together until the apple logo appears (ignore the ON/OFF slider) then let both buttons go and wait for phone to restart (no data will be lost).
Retrieving data ...