Just curious whether the community here, anyone often change their mobile line from one Telco to the other one to save the bill cost?

I review about 2 to 3 months before my contract expiry every 2 years. See which one offers the best deal.

I am trying to see if it is worth it to change from gomo to giga to save $10 per month. Giga might not be the cheapest but seems like at least you can get some form of support if there are any issues unlike other SIM only

Yes compare with other telcos 2-3 months before contract expiry

Use Myrepublic Telco.