Hi @IK11 , great to hear you are getting away for a few months. When you suspend your service, you will be suspending the number for all the services. So that would mean no calls, no texts or data. If you use FB messenger or whatsapp, they will work for you over wifi. Be aware if you have a financed device that the payment for that would still have to be made each month.
Hope you have safe travels and that answered you question, cheers