Hello.
When I go Europe, I usually just add Verizon's international plan. But last time I went over because we got lost in Venice and kept using google maps. That data overage cost me $100.00. So I'm looking to to getting a sim card. I have an old unlocked iPhone 4s. I've used this years before in Asia with a GSM sim card. I just bought this sim card at Amazon https://www.amazon.com/gp/product/B01FI1JW72/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1. Anybody used this before? I was going to get the Orange but delivery would be after my departure date. I'm heading to UK and France. Will I be able to use the regular iMessage when sending texts or should I download viber or whatsapp?
I am also bringing my iPhone8. If I put it on airplane mode but put it on wi-fi and enable wi-fi calling, will I be able to receive calls & texts from the US? Is wi-fi calling safe? Will I be getting any extra charges from Verizon if I use their wifi calling?
TIA.