Suddenly on April 27th my Hand Phone, Lenovo P780 with Android Jelly Bean cannot connect through WLAN (Wi Fi) at my home. Though the signal is good and I input the right password, it cannot connect. The message is: Authentication Problem.
But in my Office, my hand phone is connected through the Wi Fi without problem. Then after backup the data, I reset my Hand Phone. Above the battery there is a tiny red button. I push it with pen.
After I went home, I can connect to the Wi Fi without problem. But I don't know if the router there is reset or not.