New my cell signal lost

osama kamel

Feb 22, 2021
hello everyone
i have problem with my xiaomi note 2 my cell signal drops to zero and gave me no service every time i hit home key or closing any app by pressing back key
also i tried factory reset flashing original rom or custom rom removed sim and it worked in other devices perfectly other sims make the same problem on that note phone
and the only solution is to put phone on airplane mode and turn it off and sim work again until pressing any key to quit any app
also if i hit back key inside app nothing happen but if used to close app then the signal lost
please if anyone has any idea tell me
thank you all for your time and effort