"No Sim detected" problem
The Sim card detection suddenly stopped. Whatever service is put in, no SIM card detected.
What might be the reason?
What is the Fix?
The HTC One X is the first HTC phone to be equipped with a quad-core processor, released in April 2012.
I found that my issue was that there is a piece of metal at the bottom of the SIM card slot that when you put it the sim it connects with a sensor that tells the phone a sim is inserted. But the issue is the metal cage does not cover the full sim area and the metal arm can dislodge at the bottom and doesn't connect. I had to take the back off and push the arm back in alignment to have it recognize the sim again.
Hope this helps,
A simple solution/work around to this issue involves placing a small piece of tape or paper behind your phone's SIM card and sliding it into place as normal, don't force it, it should slide in smoothly with no extra force needed. If done correctly, this may make your SIM card fit more snug into the SIM card tray and enhance the SIM card's connection.