Nokia 808 Pureview is its charging problem, and this is mainly because if your charging connector is giving you problems then sooner or later your phone is going to be out of charge hence rendering you completely helpless, therefore it is highly recommended that one should get it fixed as soon as one notices any such charging issues.
to sole charging problem Nokia 808 Charging Solution Jumper Problem Ways Charging Not Supported
after disassamply of mobile phone you have to do a few steps as shown in above diagram.check charging jack and its points do they hae good value if yes then change chager and check it and if charging points at mother board do not show accourate value with meter then you hae to check all parts and tracks that are given in diagram of Nokia 808.