BackHow to insert a SIM card into my HTC One M9 — Step 1/3
Turn the HTC One M9 over and insert the SIM removal tool (included in the box in which the phone came) into the top right corner of the phone and push to eject the SIM tray.
BackHow to insert a SIM card into my HTC One M9 — Step 2/3
Back Insert the SIM card into the SIM tray.
BackHow to insert a SIM card into my HTC One M9 — Step 3/3
Back Re-insert the SIM tray and push until it clicks into place.