Automagic Forum

I have a stock jelly bean rom for my nexus s and I want to switch 2G/3G without using the Control UI action.
Surfing on the internet I have found a couple of methods I can use to do this switch but no one of this works, what I do wrong? (examples to switch to 3Gl)

• am broadcast: (as seen here)
  am broadcast -a com.android.phone.CHANGE_NETWORK_MODE --ei networkMode 0
• sqlite3: (as seen here)
  sqlite3 /data/data/com.android.providers.settings/databases/settings.db
  insert into global values(null, 'preferred_network_mode', 0);
  .exit

With am broadcast doesn't change anything viewing the "Only use 2G" checkbox in the android settings. Instead, using the sqlite3 method in the settings.db file there isn't a global table and I can't find the preferred_network_mode option.

What I do wrong?

Hi,

Android provides no official API for this and no one has found a workaround or another unofficial method that really works on a stock ROM to my knowledge.

• am broadcast only works on modified ROMs (CyanogenMod or other ROMs that incorporated the same changes). The action Set Mobile Network Mode (2G/3G) uses this mechanism.
• You could also use action Set System Setting to change the global system setting (Android 4.2+) with Automagic (use at your own risk). Rebooting might be required. Temporarily turning airplane mode off/on or toggling the telephony radio did not work on my device.

Regards,
Martin

Wooo, thanks for these sed information for me

My Android is 4.1.2 and no one of these methods works. I can try to switch to a cooked 4.2 rom.