I get good speeds with my iPhone using 4G, typically 30 - 50Mbps. Up until recently I’ve had the same speeds from my iPad when tethered to my phone however now when I tether my iPad to my iPhone I get about 1Mbps with the iPad and the phone still gets 30-50Mbps. I have 40GB per month data allowance and for this billing period I’ve only used 5GB. Could it be Telstra are throttling tethered connections?
I don't think Telstra are throttling Tethered connections, The speed is the same when measured on my phone a Galaxy S9 or on my laptop using the phone as a hot spot. It might be the WiFi link limiting the speed of the connection. Is it only the download speed that is slower or is it both upload and download that are slower.