I bought my new keyone, and I realllly love it.
But there is a problem, VOLTE.
Since my cellphone is 100-7(indian ver), i can't use VOLTE
I did registration about VOLTE to my phone, and IMS setting, but it doesn't work!
When I googled it, I found that it is linked with OS, not hardware.
So I found a way to install 100 -1 firmwares on 100 -7.
Is there any way to install it?