Samsing A54. When receiving a call, I answer, there is nothing on the other end, sometimes they can hear me. When I get calls, they are dropped immediately. Calls won't go thru. Nothing but call problems for a couple of months. I can turn the phone off & back on, it seems to fix for a short while. I can keep turning phone on & off especially when driving. Very annoyed. Is my phone defective? Anyone else? Can't keep doing this