We apologize for the inconvenience caused to you.Let me recommend some steps to further isolate and determine what you are experiencing. Please be aware that device speeds may vary based on multiple outside factors. We would like to suggest you kindly follow the below mention steps to overcome the Issue:-
1) Ensure that network frequency of your device should be selected on Auto-mode.
Menu>Settings> Connections>More Networks> Mobile Networks> Network Mode> Select Auto mode (GSM/WCDMA/LTE).
2) Search for the Network Manually by the steps as mentioned:
3) You may check by exchanging the SIM in SIM slots.
4) Insert different SIM card in your mobile and check if the issue is resolved or not.
If still issue persists then we would suggest you to once contact with your service provider.
Be sure to hit ♡ when you find an answer that works for you. For further assistance, you can get in touch with us via Live Chat option by following- http://livechat.support.samsung.com/Customer_new/IN. You can also connect us via Samsung Members web community by following mentioned url-https://community.samsungmembers.com/en_IN#/
