How to fix network problem in SIM2?

I m using honour holly, sim first i  m using vadaphone and sim2 idea when get calls to sim2 my both net work goes out. how to reslove this problem




I suggest having your phone checked. Might just be a software issue which unfortunately resort to flashing the stock rom. If so, I suggest backing up your files before going to a service center for a check up.



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