ISWAT TETHER UNLOCKER can bypass the apn restrictions for mobile tethering imposed from android 4.1.2 to latest.
Open the app, unlock tethering and give your mobile connection to your devices.
The app must be opened every reboot. ( DEVICE MUST BE ROOTED)
Note: you can use http injector or xp psiphon(i think) without iswat tether unlocker but it can drain your battery fast and it will cause lag because it will eat alot of ram
First connect your android phone to any vpn (e.g. I use Psiphon Handler)
Open your hotspot
Then open your ISWAT TETHER UNLOCKER
click UNLOCK just continue clicking until the language change into something spanish blah blah (dont know that language) and it will start unlocking your hotspot
Now try to connect your other device to your unlocked mobile hotspot
(Like what i did) i connect my iPad to my android mobile hotspot to see if it is work
It works!! :) now you have free wifi on your home without any fee or bill lol
Please share guys