finally...!!I got this one fixed. The problem is not related to my handset but it is on the SIM. I tried changing slots and using the SIM on other device and it did not serve the purpose but when I tried with new SIM...tada my problem resolved....

just yesterday I bought note8 online and see that my messages are failing to send to any number. Tried above steps yet no luck. can someone help?

I do see this issue...faster discharge