Thanks to a post in Ce4Arab, Now I can use Whatsapp without needing a data connection, just using Wi-Fi!
1- Rooted Android phone.
2- Rooted Android Tablet.
3- Titanium Backup PRO
4- Whatsapp of course!
On the phone:
1- Install Titanium Backup PRO on your Android Phone.
2- Install Whatsapp on your Android phone and activate it.
3- Open Titanium Backup PRO, press Batch and then Backup your user data, they say you must make a full backup but I only did the following:
Open Titanium Backup PRO, then go to Backup/Restore, scroll down till you find Wahtsapp, press on it once and then hit Backup!
4- Using any method/file explorer brows your Android phone to folder named TitaniumBackup ( you'll find it in sdcard ), copy it to your computer, then copy it to your Tablet sdcard.
Now on the Tablet:
5- Install Wahtsapp on your Tablet.
6- Install Titanium Backup PRO On your Tablet.
7- Open Titanium Backup PRO , Press Menu, then press Batch then scroll down to ( restore All apps with data ).
- I haven't used Titanium Backup PRO before, so all the steps above is with using the program once. If anyone is using it and has backup their data before please paid attention if you do have previous backups.
- These steps has been made on Froyo 20110211 update.
Source ( Arbaic thread )