I am using this app since 7 months. This app give recharge its genuine but points collects so slow. First 1000 points collects fast and later it gets slow. I changed my mobile with latest feature phone. Now when I trying to register with my mobile no. App shows massage that no. is in use by different account. I write it to app help option but no solution found. So my suggestion is in this app you can use your mobile no. in one device after than you will not be allowed to register with same no in other device.