Skip to main content
Community Member
April 22, 2026
Question

new phone old sim now working

  • April 22, 2026
  • 1 reply
  • 81 views

Hi, just had new iPhone delivered used my old sim from previous iPhone but showing as no network

    1 reply

    Gemma M
    iD Mobile Employee
    iD Mobile Employee
    April 22, 2026

    Hi ​@Lee hadfield1988,

     

    Sorry to hear you’re having trouble with your new iPhone, I can imagine how frustrating that may be. 

     

    When moving a SIM from an old iPhone to a new one, it can sometimes take a little refresh for the network to pick up properly. First, it’s worth double-checking that you’re using the correct iD Mobile SIM card (and not the old provider’s SIM, if you previously switched).

     

    Here are a few other things to try:

    Make sure Airplane Mode is switched off
    Restart your iPhone
    Remove and reinsert the SIM card to make sure it’s seated correctly

     

    Then try a network restart:

    • Go to Settings
    • Tap Phone
    • Tap My Number
    • Delete the old number
    • Enter the new/current number starting with +44
    • Tap Save

     

    Then follow these steps to refresh iMessage:
     

    • Go to Settings
    • Tap Messages
    • Turn iMessage OFF
    • Go to Settings > General
    • Tap Reset
    • Choose Reset Network Settings
    • Once your iPhone restarts, go back to Settings
    • Tap Messages
    • Turn iMessage ON again

    Your iPhone should now recognise the SIM and verify your number.

     

    After doing this, give it a couple of minutes as it may take a short while to reconnect to the network.

     

    If it’s still not picking up a signal after trying these steps, allow 24 hours and then let us know if the issue is still persisting.

     

    Regards,

     

    Gemma M

    The iD Mobile Social Media Team

    Did my comment help answer your question? If so, don't forget to mark the response as the Most Helpful Answer.