I have been using Smarty / Three Mobile unlimited data for a couple of months now.
The service appears to have no caps or throttling. I have used up to 900GB download in a month.
I have a 5G connection. With a good signal.
When the mast is not congested I get around 400mbs down and 10-12mbs up.
At times of high congestion when people are streaming in the evenings I get 'never less than 100mbs down and 3mbs up. These are the very slowest speeds. It is usually much better.
Lag is typically 28ms - 32ms. But occasionally it is 40ms.
The connection speed varies a lot minute by minute. I expect that is all to do with contention.
The app is superb. payments can be paused or resumed at any time and plans can be changed.
Support is first class.
Time With Provider: 10 Weeks
Package Name: Smarty unlimitted Data calls and SMS