I’m guilty of that but not anymore. My dad still signing but I wanted to advise him to switch and hope don’t recontract sia.
He used to say sign contract cheaper when I was younger and studying. No lor. Got few hundreds dollars of difference (cheaper) + much much more data and call times and those roaming and IDD.
Yah sia I also wanted to help my dad to port. Lol. I bet your dad also won’t turn off the 4G/5G when home. Can also happy happy use and watch videos when outside. No need to save.
My dad last time always asked my mom to turn off data when she was outside, like forbid her to use wth, but that time I already helped her sign up GOMO liao. Turn off simi. Now even better lor 228GB, I think my mom go home never even turn off data. My mom told my dad: eh we $8 monthly only okay.