cell got wet screen dead

marquez3655  just like any other device that does not get cleaned properly. It will fail and shortcicuit. In your case you want to go ahead and disassemble it. Should be pretty much the same way as on here Once disassemble you need to clean it. Use this guide 修复iPhone 的进水故障 to clean it. It was written for an iPhone but the steps are identical for cleaning every device. Once properly cleaned you want to reassemble your phone and change the battery. Always use a new battery with water damaged devices. Then re-evalauate. It is possible that you have an LCD shortcircuit and repalcing that may get your phone back to working condition. Water damage is the hardest to repair since virtually any part may have failed.