If I'm correct, there's a "Select All" option in smf but I'm not sure if that's compatible with the current version of the forum software. I can't remember where I used it (seems like in bitcointalk lol) but with that "Select All" option, the code written next to the "Select All" tag, could be selected and easily copied. I don't think it will be a lot of work to implement this if this exists in smf.
If this is working then the OP probably won’t create this thread and I will be happy but this problem is still my struggle because I just try it on all of my handheld device without a good result.
Can you provide screen record on how you do this?
I think LW is missing something here. Well, with a tablet, it's easier to select the code while with a mobile, it's almost impossible lol. I had to quote the whole OP and then find out the signature code section according to my rank lol and copy it.