Hello techies,my device fell into water stopped charging,I mean could only charge when device is off,but started charging normally both when device is on or off,but the problem now is the phone does not display mobile network,I tried everything thing including factory reset yet problem still persists,I even removed the Sim and put it in another device and Sim worked properly,what should I do,expert advice needed?

Carry am go give engineer na.shuo!