First do a Reset network setting nd check if problem is still there do reset all setting and check if nothing works you'll have to do a factory data reset that's only the solution. Hope this will help u
Plz Accept solution clicking on 3dot right side nd Do follow for Regular Updates.
Please reset network setting of both Sim one by one and than reset all settings of your's device in general management settings also Flight ✈️ mode on n off one time, restart your's device without any Sim in slots also interchange Sim in slots also turn off power saving mode then try to it's again. If you like please accept as a solution it's help to others users also, click on 3dots in my reply section and click on accept solution. Thanks.
