"Why won't my Samsung Galaxy Tab 2 charge?"に関する回答I've read a lot of strange answers on how to fix this from quickly plugging in the charger to turning off wifi. I can confirm the answer above about the charger. For some reason the latest os doesn't seem to like the original USB adapter any more. I fixed this problem by plugging the cable into the USB adapter for my iPhone 5 and it now charges like a dream. No more red cross and charges quicker. Just change your USB adapter.