^^ Did that. My phone shows 4G when his 4G enabled sim is put in it. His phone does not connect to 4G when I put my Airtel 4G sim in it.
Clearly it is issue of 4G service not enabled on my sim. But Airtel refuses to acknowledge. They say that
"Saar, aapke number pe 4G activated hai." End of topic.Then they yap about my phone being faulty and blame
Apple for falsely advertising 5S being compatible with
Band 4 LTE of Airtel 4G.
Nothing makes sense. 4 Customer care persons have said the same thing about Airtel 4G being deployed on Band 4 in Mumbai.