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  1. Scotty Cornwell's Avatar
    i have a at&t 1520. i went today and purchased a straight talk byop sim kit. inserted the nano and went through the steps. i got invalid sim. i went to the micro sim and cut it down. the 1520 reads no service now. not sure if its reading the sim. or what i really need to do. cant get any help from straight talk. i cant call anyone, dont have a phone. any and all help wold be greatly appreciated. i am new to windows phones but not electronics. pretty tech savy, but not really sure what to do next?
    04-12-2014 01:48 AM
  2. Paul May's Avatar
    A lot of AT&T's flagship phones are locked to the AT&T network for 6 months before they can be unlocked to be used on other networks. It was that way for both my Lumia 920 and 1020.
    04-12-2014 12:14 PM
  3. Scotty Cornwell's Avatar
    then how do people buy them and unlock them within a week?
    04-12-2014 03:04 PM
  4. Laura Knotek's Avatar
    If it's an AT&T Straight Talk SIM, no unlocking is necessary.

    If you bought a T-Mobile Straight Talk SIM, you need to unlock the 1520 before using it.

    Which SIM did you get?
    04-12-2014 03:10 PM
  5. Paul May's Avatar
    then how do people buy them and unlock them within a week?
    You can buy the phone Factory unlocked which is obviously more expensive and is not carrier subsidized. Laura has a good point though, I assumed you meant T-Mobile Straight Talk otherwise you shouldn't be having any issues with an AT&T straight talk SIM.

    I had to wait for 6 months after the release date of my Lumia 1020 before I could unlock it which I needed to travel to Europe.
    Laura Knotek likes this.
    04-12-2014 06:11 PM
  6. Scotty Cornwell's Avatar
    i purchased a byop kit that has both t-mobile and att sim cards. it has 4 credit card sized cards. 2 for t mobile 2 for att. one holds the nano and the other holds the standard and micro. i inserted the att nano and reads "sim invalid". i read in other post where it could be a bad sim but can not get any one from straight talk to help me. there online support is some $h!t... they have done nothing but upset me more
    04-13-2014 12:27 AM
  7. Scotty Cornwell's Avatar
    im taking pictures of everything so you guys can see what i am seeing on my end
    04-13-2014 12:33 AM
  8. Scotty Cornwell's Avatar
    this is where i am at. i used the att nano and got sim invalid... i cut down the micro and states no service

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    04-13-2014 12:35 AM
  9. Will6371's Avatar
    Make sure you have Network set to automatic and either put the sim into the phone when it is switched off or after you insert the sim then restart the phone.

    You may also have damaged the sim when you were cutting it.
    04-13-2014 05:28 AM
  10. Scotty Cornwell's Avatar
    not to sound to dumb but where would i check to see if it is set to automatic
    04-13-2014 08:22 AM
  11. Will6371's Avatar
    not to sound to dumb but where would i check to see if it is set to automatic
    Setting, scroll down to Network or it might say mobile network tap on it and then at the bottom make sure it says automatic.
    04-13-2014 08:32 AM
  12. Scotty Cornwell's Avatar
    ok. i just did a complete reset of the phone and inserted the nano straight talk sim in and going to see what happens
    04-13-2014 08:56 AM
  13. Scotty Cornwell's Avatar
    i did a reset it says invalid sim. i paid almost 60 for the whole byop kit and dont want to be out. could it be i just have a bad sim card?
    04-13-2014 09:28 AM
  14. Morpheus Phreak's Avatar
    Take it in to AT&T. They should be able to tell you if you are doing anything wrong with the SIM.
    04-13-2014 09:32 AM
  15. Scotty Cornwell's Avatar
    well. I totally learned the best lesson of all... i am a huge dumb ***!!!

    so i live in a area with not the greatest signal... i went out side... turned phone on, then off... wait for it... wait for it... it works!
    Last edited by Scotty Cornwell; 04-13-2014 at 04:15 PM.
    Paul May and Laura Knotek like this.
    04-13-2014 11:08 AM
  16. Scotty Cornwell's Avatar
    i changed my apn settings so far everything works same as ever and at 45 a month
    Paul May and Laura Knotek like this.
    04-13-2014 11:09 AM
  17. Paul May's Avatar
    Awesome. Glad you got to the bottom of it. Enjoy your phone.
    04-13-2014 12:47 PM
  18. Scotty Cornwell's Avatar
    Update... Phone is working exactly the way it should be. Text, Picture, Data,Voice, Skype, Facebook... everything... all at 45 a month... im so excited to have my 1520 back and running again. does any one know if doing the 520 is the same process? my girlfriend has a 520 right now and shes cool with it... shes new to windows phone as am I. we switched from iphones... and can i say i will never go back or give up my 1520
    04-13-2014 08:52 PM
  19. Paul May's Avatar
    I got my daughter a 520 for xmas and she loved it until she broke the screen. Anyway, I believe the process should be the same except it will be a micro sim instead of the nano.
    04-13-2014 09:43 PM
  20. Mark Eggleston's Avatar
    working now?
    04-13-2014 10:00 PM
  21. Scotty Cornwell's Avatar
    everything is all working 100% but can not log into the wpcentral app
    04-14-2014 03:02 AM

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