Is any one having problem in direct volte calling after update of Android 7.1

very poor network connectivity. during volte voice call voice lags n not clear voice . please solve it. i want clear conversation. can any one solve it ? jio network is so poor as compared to xiomi (MI) phone. when i switch to MI phone i get better ...

very poor network connectivity. during volte voice call voice lags n not clear voice . please solve it. i want clear conversation. can any one solve it ? jio network is so poor as compared to xiomi (MI) phone. when i switch to MI phone i get better ...

There must be option for controlling screen colour. In samsung super amoled screen the given scrren is slightly yellow. screen is not pure white. there must be option of changing screen temperature from warm to cool.