This app was mentioned in 12 comments, with an average of 1.33 upvotes
I pay for ExpressVPN. They are an excellent provider, and they supply a very well developed Android app. For me, they have the added bonus of not being based in the U.S. If I remember correctly, the app also comes with a limited free trial. They also offer a 30-day guarantee if you don't like the service.
Android app link: https://play.google.com/store/apps/details?id=com.expressvpn.vpn
(Let me know if you're considering them, I'll PM you a referral link and you and I will both get a free extra month!)
Apart from paid subscriptions, if you want to use your own VPN, OpenVPN for Android is the go-to choice:
https://play.google.com/store/apps/details?id=de.blinkt.openvpn
There are two ways. Either make the person within Azerbaijan appear as in elsewhere; or make the outsider seem as if they're in Azerbaijan. I went with the latter and made myself appear like I'm in Azerbaijan using this VPN (use 10minutemail to sign up instead of your actual mail) and set your location to Azerbaijan. Hence, I appeared to be calling from Azerbaijan and therefore calling from the UK via WhatsApp, Skype, etc worked. As a side note, if your connection is too slow to handle VPN, disconnect the VPN after you've made the call.
You can download Express Vpn from here: https://play.google.com/store/apps/details?id=com.expressvpn.vpn&hl=en_IN
After opening, there will be a trial period of 7 days with premium features. When the trial period ends, you can use 10minutemail to generate a new mail.
That's how I've been using it. I hope it helps.
I just installed ExpressVPN (recommended by Android Authority) which has a 7 day trial and I have no trouble streaming when connected through a US server..
EDIT: Or a German sever.
Yes. See here
Seems like you downloaded a modded one...
The real one has an app icon:
https://play.google.com/store/apps/details?id=com.expressvpn.vpn
I used ExpressVPN, Mumbai server.
https://play.google.com/store/apps/details?id=com.expressvpn.vpn