I saw some content on YouTube that some phones have a overheat protection on android which prevents wifi mobile data etc, does this phone have that too? its a samsung j7 prime 2 with android 9 (one gui 1.1). I sometimes upload videos via YouTube application and I was worried if cellphone gets too hot or something during the upload, I use wifi for upload not mobile data,
Even if your smartphone gets warm i doubt that uploading a youtube video will destroy it because it simply cannot generate the required heat.
Also IF your phone does get Extremely hot it will give you an error message and shut down OR just display a warning and not allow you to use the phone until it cools down.