yes, Whatsapp works fine over WiFi use it all the time on WiFi at home and at work and while roaming I did it recently when i went to Dubai and Bahrain keep your current SIM in the phone and just make sure that normal data (3g, hsdpa etc.) is turned off (as that's freaking expensive when roaming)and you only using WiFi. there's an option on Whatsapp to use WiFi only when roaming tooI am going to the far east and want to keep my current Whatsapp account. Will it work if I use it over wifi?
Any tips/tricks to make this work without cellular data (only wifi)?
My whatsapp is currently working on my tablet as it has more data than my cell and I'm using my cell number. At home I remove the sim from the tablet and it runs on wifi....AFAIK, Whatsapp won't work like that. I assume you are going to keep all your current contacts though? Why not just install Whatsapp when you get your new SIM and send a broadcast out to those contacts with from your new number - they obviously need to save your new number though.
Otherwise check this, just browsed through the first posts:
Well i learnt something new today!My whatsapp is currently working on my tablet as it has more data than my cell and I'm using my cell number. At home I remove the sim from the tablet and it runs on wifi....