I switched back to Nokia after using Samsung cell phone with my t-moblie network. I am just outside of 1 year warranty period and this phone is giving error message : "Not charging" with a stop sign. I tried new battery and new charger to no avail. The phone itself has gone bad all of a sudden. Does Nokia want us to throw our cell phones out of the window every year?? This phone also switched off twice for no reason during normal use.