Hi all what's the best E sim for Aussie traveler will be there often for long periods

Hi all, I’m planning a trip, possibly world wide.

I have seen E sim apps available for iPhone but curious to know how these work, I am considering travel to the following countries and would also like to keep my WhatsApp number but maybe cancelling my home country contract (New Zealand).

Any suggestions before I go down the rabbit hole?

Philippines

Thailand

Vietnam

Laos

India

Mexico

Columbia

Bali

Portugal

Hello! Arriving on Friday for 3 months. We will probably purchase e-sims at the airport. Do you know if any of the major carriers offer 90 day plans? We are mainly concerned about data and not too much with phone calls. Also, will it work with an Apple watch and is something you need to pay extra for? Thanks!

I'm going to Thailand. please introduce me unlimited high speed 5g sim. I only need internet and don't need to make calls using a SIM card

Thank you