Cosmin Ionut
Lurker
Hey! A month ago I bought a galaxy S4 gt-i9505 and shortly after that some problems started to occur. First, after I upgraded the OS from 4.x.x to 5.0.1 I started to receive the error "not registered on any network" every time I tried to call or send SMS but the SIM was installed. Just after I restarted the phone it worked fine again. I didn't make much of it because I thought it's something normal since I didn't remove the SIM before the update and was a OS update. Today I tried to call someone but the problem was he couldn't hear me and I couldn't hear him. I tried to call someone else but again the same problem occured. In both situations messages could be sent and received. After I restarted the phone I received 2 notifications "optimizing apps" and "starting apps" and then the phone started to work fine again. Is there any problem with my phone or it's something normal since the first problem occured after a OS upgrade with the SIM card never being remove before the OS ugrdte and the second problem occured after a month of updates (maybe important ones I dunno) with the phone never being shut down or restarted.