Help Help my sd card. Htc one (m7)

[Default7_]

Recently my phone dipped into water but only the headphone port, the power button and the sim card slot... At first it kept on rebooting on its own but now it is fixed. The only problem is the sim card is inside the phone but it says no sim card.... Any help please

 

[Hadron]

It's probably a bit late to do anything now, but what did you do after it got wet? At least you should shut it down and stick it in a bag of dessicant for a few days (uncooked rice works if you've nothing else). You could try something like that, just in case there is still some moisture left that is shorting out the SIM connection. Or you could try an alcohol bath, as described in the FAQ here (though I'd not attempt to dismantle an M7 and disconnect the battery myself).

But TBH there are no guarantees that it's fixable.