iPhone 6+ 4G/LTE Not working
 

Hello Guys,

I'm using an imported iPhone 6+ and inserted 4G Sim card in it.

Tough I have 4G plan, I get 3G data when I contacted about the same with my network providers they claim, iPhones imported from other countries are having issues with 4G

iPhone imported from : Australia
right now, its being used in : India
Network Provider : Airtel

can any one help me fix that? or should I contact apple about this?

Thanks & regards,
Imran