I have an old Samsung Galaxy Note II. Rooted.

One day it went off. When I restarted it, it went to a somehow hybrid state between factory and the status it had before crashing, i.e. I had to reinstall everything, everything on mobile sd was gone, BUT it retained root.

Now everything eksr is working (besides some problems due to the old battery, it freeze or shut off every time battery level is about 80%) except for the fact that it does NOT recognise Sim cards (which are ok when mounted to different devices). Messages are "not registered on network" and "insert a SIM card".

I am still using the phone for everything it does not directly require a network registration (photography, reading, games, surfing on WiFi ecc).

Is there a way to correct whatever got corrupted? A number? In fact the phone does receive some signal from the provider (3 to 4 bars) selected - which is that of the unrecognised Sim.

With a new battery it could be a nice device. I love note 2.


  • Try other sim card with it, maybe sim is problem. Also flash stock firmware (it will completely remove everything from phone including root and custom recovery). – Једноруки Крстивоје Oct 17 '17 at 15:16
  • Sim works in other devices. Can I get the stock firmware from the web? Could you point me to a good resource? Thx – Alchimista Oct 17 '17 at 16:22
  • Look on Samsung site. Not that sim in other phones. Other sim in your phone that I was saying – Једноруки Крстивоје Oct 17 '17 at 17:02
  • 1
    I forgot if I have done that. I will. Thank you – Alchimista Oct 17 '17 at 19:24

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