Isn't the data unlimited when LTE T uses gating45?

LTE T uses gating45 and I received the following text message.

LTE Sitting45-Basic Data are 50% exhausted, 766.0MB is available.

I originally knew there was unlimited data, isn't it unlimited?

694 2016-03-30 Gentleman

There's no limit to the number of calls between SKT users
There's no limit to words, although there's a limit of 300 minutes a day.
300 minutes is 5 hours, so there's no one who uses it that well

Gentleman 9 years ago 0

A. 2

It is a rate system that reduces 50% of the exhausted data from 16:00 to 1:00 the next day.
It's not unlimited lol

Gentleman 9 years ago 0

A. 3

It's not unlimited.
If you have applied for the LTE Ting Safety Option, the data will be converted to unlimited data after using all the built-in data.
At this point, the communication speed is limited to 400 kbps.

Gentleman 9 years ago 0

Same Tag I think I use too much data on my phone, where should I use it?

Same Tag Please recommend a low-cost plan that can use about 10G of data per month