How to copy wireless networks list from one android device to another? I got a very long list of free hotspots and friends/family networks on my phone.

Recently I bought a tablet and I'm trying to find a way to copy the wireless manager list to this new device. Any idea how to do that? Both devices are rooted and running ICS.
As you are rooted: Wireless network data are stored in data/misc/wifi/wpa_supplicant.conf -- so you could basically copy all its network entries from one device and insert them on the other. The entries look like

network={
    ssid="Telekom"
    key_mgmt=NONE
    priority=42
}


An easier way would be using the App Wlan Backup &amp; Recovery (root): Backup all entries on one device, and restore them on the other. As you can see in below screenshot, the tool can even send the backup by mail -- so transfer to the other device should be easy:

 

But reading the comments on this app suggests it does not always work as expected: Users even recommend to use the manual way I described above.

Another option is using Titanium Backup, and restore the Wifi data on the other device. I did that successfully a couple of times, also cross-device and cross-ROM.

Third option is offered by the app Wifi Passwords (about USD 1), which allows you to share networks.