Hi so i purchased a A70 when it first came out and since then the phone has had a lot of problems but most of them i did get fixed like first i dropped the phone and the screen broke i used it like that for like 3 months and i finally got the screen repaired then after a little while my phone just stopped charging it worked but didn't charge i went to the Samsung technician and they said the battery was bad so i got it replaced and after 4 days it stopped Charging again i took it back and they said that the charging port was fried so i got it replaced and then the phone was fine after the new security update the sim started causing problems like when u insert the sim-card it works for about 2 minutes and then the WiFi turns off i go in setting and it does not allow me to turn it back on it just keeps turning off and after a little while it will just crash the entire phone and reboot and it keeps doing that over and over until i remove the sim-card and it works like its a brand new phone so i taught its the update so i flashed a older stock ROM and still it has the same problem i even flashed the same version i was on before still the same outcome what can i do to fix this plz help i have reset the phone like 3 times i dont know why its doing this plz someone help me fix this
