Is a software issue preventing my phone charging?

I have a Samsung A40 smartphone, less than 2 months old. Usually it charges fine, but about once a week it stops charging completely, and does not recognise the cable, despite trying different cables, power-sources, and moving the cable around to get multiple angles. After about a day, it suddenly starts charging as normal.

is this likely to be a problem with the battery, or is there a software issue going on? I work in a country without access to Samsung support, so cannot take it to be repaired unless its likely to be a simple battery replacement. Any help appreciated!