Tim has a Samsung Galaxy Tab tablet and it won't hold a charge. He tried to use the charger with his phone and it won't take a charge either. Leo says that means the charger connector isn't seating properly. Leo suspects the cable itself is damaged. Leo recommends looking for a microUSB charger and he should get one with a minimum of 10 watts. That will guarantee that his device will charge faster. A new cable could do it as well, if it's detachable.