Hello everyone. This evening I realized that I encountered an event that bothered me a lot. I put my phone in Airplane mode so that it would not disturb me while praying. then I looked after leaving airplane mode and saw that I received a no network warning. although I turned it off and on many times, the network did not come. then I realized that there were no IMEI numbers while navigating the phone menu and there was no imei number in the *#06# Combination. I reset my phone and the network came back, but when I put it in Airplane mode again, the IMEI was gone again. Also I can't activate or deactivate the sims of the phone from the sim card section in any way. My phone is only 3 months old and I have done the latest updates One UI 6.1 installed SM-S9180 model
Has anyone encountered a similar situation?
Thanks for your answers in advance.