Did u try this
Tried reseting settings but still problem persist.
Some how issue got resolved by itself. Without doing anything after reseting network setting. Issue was not solve and then prefer to ignore it for couple of weeks.
And suddenly I tried sending sms it was successful.
No setting were changed.
It seems issue is with network with random devices.
May I know what is the solution for this issue. I'm also facing this problem right now
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by Trista W., 2019-05-28