FOLLOW THIS GUIDE STEP BY STEP FOR UNLOOCK YOUR RDMI 4 PRO
1. After you have recived xiaomi SMS download redmi 4 gobal rom 8.1.2 from xiaomi in your smartphone and flash this new ROM .zip using Updater app
http://en.miui.com/download-320.html
2 go to https://i.mi.com/ and disable your devices
3...