Why Is My Phone Saying Invalid Sim Card. Test Out Your SIM Card. Merely go get another SIM card insert it to your HTC phone and check whether it could be recognized well there.

Upon launch you will be asked to input a code to activate the sim. 26-05-2016 0537 PM redeemer kbee Wrote. With your phones screen facing you remove the card tray.
When it did come on I either got a message telling me the SIM is invalid or No network is.
Check the SIM tray. Then you should take the SIM card out of the slot and replace SIM card. If your phone is not detecting the SIM card this video will h. My phone is compatible for qlink but when I put the sim in it says invalid sim n.

