Review on DeoxIT Connector and Contact Solutions by William Dean

Nov 2017 I used it on my phone's battery, left the gold on overnight and now the battery is working great. The first time I applied it and wiped it off it was effective but once I let it sit and dry it worked :) Update February 2019 My phone dropped in water so I dried it with a desiccant pack for 3 days leave, but the charging connector is corroded. I cleaned the connector with rubbing alcohol but that didn't work so I added a thin layer of deoxide gold and it started charging again which works fine. I definitely recommend this product 100%