جرب هذي الطريقه
Choose SETTINGS - WIRELESS CONTROLS - MOBILE NETWORKS -
2. uncheck everything unnecesary ie. "Data Roaming" and "Enable always-on mobile" -
3. Change setting on "Use only 2G networks", wait 10 seconds, then change it back.
4. Now try NETWORK OPERATORS. Here you will get a network error (Not the "com.android.phone" error)
Just continue and you'll get your wanted network.