After you land in Israel:
Insert your Israeli SIM card and switch on your phone.
The phone will automatically connect to the Cellular network.
Once this connects, open WhatsApp.
A message will appear saying “Carrier Changed, Mobile network changed. Do you want to register with a new phone number?”
For this above message:
DONT change the number.
DO select: KEEP (your own number)
Now you are connected and you have the same contacts and groups even though you are using a different SIM card.
Click here to watch our tutorial video.