Lose signal constantly
So I updated from android to iOS I went from a galaxy s8 to a iPhone XS Max and ever since I did I lose signal constantly worse than I did on my android and I run off metro PCs but I know it’s not my carrier bc I never had issues with my android software is updated I reset my phone and network settings taken my sim card out for 15 mins put it back in and i always lose signal everywhere I go im lucky to get 2 bars could I need a new sim card or is there issues with the antenna or what im on iOS 14.6