INTRODUCTION :
Increase InterNet Speed By changIng Dns, Its Worked All NetWork and Only In Rooted DevIce it is Vey Easy But First Your Phone Need Root. Chek My Oldesr Post And Try How To Root any Device
STEPS :
1) FIrst DownLoad Dns ChanGer AppFrom From Here
2) Then Open it and it will ask for Root permissions, click on grant button
3) Put PrImary DNS as 8.8.8.8 and
Put Alternate DNS as 8.8.4.4
4) Now ClIck on Set Button and Chek the DIfference.
Enjoy