QUOTE(Chrono-Trigger @ Apr 12 2016, 05:27 PM)
yes telco can detect tethering through few methods. Google and read about it.
"how does telco detect tether"
The page below listed several ways...
http://android.stackexchange.com/questions...cl-wifi-hotspotYour Phone asks your network if tethering is allowedNot the case of our friend, as he is using non-customized iPhone.
Your phone tells your network that you are tetheringNot so sure about this, but can detect =/= can disable
One thing telco can do is to disable mobile network connection whenever it detects tethering. But from what our friend describes, the option to enable tethering simply disappeared.
Inspecting the network packets for their TTL (time to live)Possible. But again can detect =/= can disable
MAC address inspectionMAC address can't travel across networks, e.g. from wifi to mobile network
TCP/IP Stack FingerprintingPossible. But again can detect =/= can disable
Looking at the Destination IP/URLPossible. But again can detect =/= can disable
This is getting very interesting