Anyone here know hiw to calculate postpaid penalty if terminate early?

For example,
Note 9 with 190 plan.
Use 10 month and terminate,
How the penalty is calculate?
Phone only pay 1299 only, no advance/upfront fee.

Thanks

Anyone at kuching Sarawak feel digi very slow and sometime no network?
Few year ago, inside my house still have 3g, now no signal ..
Even outside at city area which have 4g+ signal but no internet,
Even sms from bank also can't go through...