Heck! It died quickly.
Incoming calls does not ring to the phone and outgoing calls display "contact your supplier" just like it was doing before. My plan was to use this sim till the credit runs out when I travel this weekend. No biggy!
Phones: Xiaomi Mi Mix 2, Samsung Galaxy A50, ASUS zenfone 3,
Sim cards: AT&T (Contract), 3 UK, Piranha Mobile