Nokia 5800 Nokia phone.It an expensive phone is an expensive but very popular phone.Its problem.So I can charge solution.You this will solve this problem by using this solution.You can also check Nokia 5800 ways to fill. 
How: First step check phone number with another charger. Step charging socket check if the problem persists after Step # Check red line and spare yellow markings.
How: First step check phone number with another charger. Step charging socket check if the problem persists after Step # Check red line and spare yellow markings.
