09-14-2014 08:59 PM
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  1. pattyandchips's Avatar
    Unfortunately restarting the phone doesnt always work. I had the restart it three times before it would work again and its happening more frequently.

    It really is no good as a phone now because Im often going to ring etc. and cant because of the error. I've tried taking the sim out and cleaning but that doest always make a difference.
    02-11-2013 07:44 AM
  2. berty6294's Avatar
    Its an incredibly inconsistent problem. I can go days without getting the error and sometimes I can even go 5 min without getting the error. I can't identify what is causing it and its making me so mad!
    02-11-2013 10:05 AM
  3. jhguth's Avatar
    Still no issues after adding tape a long time ago
    thetroublewith likes this.
    02-13-2013 09:32 AM
  4. Torch4x4's Avatar
    After 5 days restarting my phone everyday I fixed it with the tape trick 2 or 3 weeks ago, never again received the SIM error...
    thetroublewith and scadidas like this.
    02-13-2013 09:57 AM
  5. thetroublewith's Avatar
    Glad to hear it guys!

    Hopefully the people who are still experiencing the problem will take note and try the tape method now - I haven't had a single error for two months. :)
    02-13-2013 12:57 PM
  6. berty6294's Avatar
    I'm afraid the tape is going to cause more damage and be a reason for them to void warranty.
    02-13-2013 02:52 PM
  7. thetroublewith's Avatar
    But the tape goes on the back of your SIM card? It shouldn't touch or damage the phone at all. :)
    02-13-2013 05:10 PM
  8. berty6294's Avatar
    But the tape goes on the back of your SIM card? It shouldn't touch or damage the phone at all. :)
    I don't want Verizon to say that I tampered with the device if they see tape residue on my sim if I ever need to use the warranty. I'll give it a shot tonight though..
    02-13-2013 05:12 PM
  9. thetroublewith's Avatar
    You shouldn't need to send the SIM when you're claiming on a warranty though, if anything you would need to keep it.

    Even if you start with a very small piece of tape on the back of the time, see if that helps, if not, add other small layers one at a time. :)
    02-14-2013 04:52 AM
  10. Ray Rogers's Avatar
    I sent my phone away for repair on a nonrelated issue, when it came back the girl at the Bell store told me that they had replaced the main board and the sim bed. So I'm thinking that it's something they are aware of and have a fix for it.
    02-14-2013 10:17 AM
  11. TheJCorp's Avatar
    I have two black HTC 8X on VZW, one with a case, one that has never had a case. Both exhibit the "SIM Error" problem. The one with the case is a VZW refurb replacement ~1 month ago.
    02-16-2013 11:03 AM
  12. daverath's Avatar
    I had the issue many times a day before. It was really getting out of hand to the point I felt lucky if I unlocked my phone without a sim error. Added two pieces of scotch tape on the back of my sim card and haven't had a single error for a week now.
    jasqid likes this.
    02-18-2013 05:59 PM
  13. berty6294's Avatar
    I had the issue many times a day before. It was really getting out of hand to the point I felt lucky if I unlocked my phone without a sim error. Added two pieces of scotch tape on the back of my sim card and haven't had a single error for a week now.
    Same here... I regret being so hardheaded thinking that couldn't be the fix! But it was, I'm happy now!
    jasqid likes this.
    02-18-2013 11:38 PM
  14. JeniRae's Avatar
    I've been having this issue since I got the phone during launch weekend in November. Tried a bunch of different fixes. It would seem to behave for a a few weeks, then start acting up again. After period of no problems, it started happening every day last week. Now it is doing the random reboots as well. Finally had enough and went to AT&T tech center to get it replaced. The girl working there was only half interested in hearing me describe the issues. She said the random reboot was likely an issue with the motherboard. She popped out the sim card, pointed at the LDI strip, and blamed all the issues on moisture. Apparently the faint pink line means it has gotten wet somewhere. Now I have absolutely not dropped it in water. According to her I must have had it in a humid room or touched it after washing my hands. Basically she insisted this voided the warranty and I was stuck with the malfunctioning phone.

    I called HTC, and they said I can ship it to them to check/repair. After a quick search I discovered some of the 8x's were shipped with liquid damage indicators that were already showing red. Makes me wonder if anyone else having this issue has a pink or red LDI as well. If you pull out the sim card, it is the tiny indicator just inside the slot on the phone. Liquid damage indicator sticker: Windows Phone 8X by HTC Support | T-Mobile
    02-19-2013 02:08 PM
  15. ssault's Avatar
    Replaced SIM and then phone. Now having another replacement phone shipped out. Not messing with tape or any crap, if it keeps happening I'll move on to something different.
    02-20-2013 10:26 AM
  16. berty6294's Avatar
    Replaced SIM and then phone. Now having another replacement phone shipped out. Not messing with tape or any crap, if it keeps happening I'll move on to something different.
    It literally takes 5 seconds. Beats the **** out of contacting customer support and getting replacements and constantly resetting your phone!
    02-20-2013 10:28 AM
  17. ssault's Avatar
    It literally takes 5 seconds. Beats the **** out of contacting customer support and getting replacements and constantly resetting your phone!
    So they can pull it out later on and void the warranty? No thanks. Their problem, not mine.
    02-20-2013 10:33 AM
  18. krazy_kaktus's Avatar
    Just did the tape trick. So far so good!
    02-20-2013 12:25 PM
  19. Drew S's Avatar
    Hi all,

    I just turned Airplane Mode off on my phone and got an invalid SIM error (I don't recall the exact error, but suffice to say it wouldn't connect to the cell network). A reboot fixed it, although it showed the "No SIM" icon briefly upon starting up. Not sure if that's normal or not. Now it's working normally.

    Has this issue happened to anyone else? Today's my last day to exchange the phone, so I'm going back and forth on it. Thanks in advance!
    Having issue on my 8x as well. Called TMo, and they have the issue on record with others calling in. They stated it was software related.

    just called into HTC and they want it for repair. HTC rep said this is the first he heard of the issue.

    I don't want to do the tape, or any hack. So with the repair from HTC, has anyone received a successfully fixed device?
    02-20-2013 07:57 PM
  20. jeffha's Avatar
    I am about to get my 3rd replacement of my HTC 8X due to the simcard issues. I've had them replace the actual simcard 2 times. I'm on T-Mo. My daughter got the same phone for xmas and is on ATT. Yep, she's having the same issue. Switched out the simcard and it's doing it again. My brother in Detroit is also having the same issue and he's on VZW. I believe it's time for a recall.
    03-04-2013 12:43 PM
  21. berty6294's Avatar
    TAPE ON SIM TAPE ON SIM FOR THE LOVE OF GOD IF YOU WANT THE PHONE PUT TAPE ON SIM. If not return it.
    03-04-2013 01:29 PM
  22. jhguth's Avatar
    UPDATE:

    still not a single issue since putting a piece of tape on the back of the sim in the tray
    03-05-2013 07:56 AM
  23. segadc's Avatar
    Yup tape is the fix!! Been going for a month or so without the error. :)
    03-05-2013 10:10 AM
  24. prettyconfusd's Avatar
    Those of you that had problems with the 'Invalid SIM' error popping up; did your 8X also frequently switch itself off?

    I'm getting the sim error (HTC told me to get a new sim and that was fine for a week but now it's just as bad as it ever was) but the phone also frequently just switches itself off without a sim error showing up. I know I'm going to either get a new phone shipped out (might see if I can swap it for a 920 as my support experience (and lack of exclusive apps, accessories etc,) has soured me on HTC and their attitude towards WP) or send this one off for repair but I really don't want to lose almost four months of app data and game saves... :/

    Might give the tape fix a try but if you guys weren't also experiencing random shut downs (not restarts) then I may have more faults to deal with...
    03-15-2013 10:46 AM
  25. robsmithuk's Avatar
    If your sim is working and your phone is on, then the sim momentarily disconnects, the phone turns off with no warning. As far as its concerned you have ejected the sim.
    You will only get invalid sim if the phone is switched on with a bad connection.
    So try the tape, its fixed mine with zero reboots/errors since.
    03-17-2013 10:30 PM
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