1. Roderick Roy's Avatar
    I get the following message 5 to 10 times a week

    "SIM card removed
    The mobile network will be unavailable until you restart with a valid SIM card inserted"
    I hadn't removed the SIM. If I turn the phone off and on again it works. I have subsequently removed, checked and replaced it several times. Problem continues

    What can I do?
    10-22-2016 08:44 AM
  2. Tim1954's Avatar
    Gently clean the gold contacts with some ispropyl alcohol (NOT water!!) wipes, polish with soft tissue and try again. The little wipes nurses use to give injections are good, or some glasses cleaners, methylated spirits... Don't touch the contacts with your fingers...
    Roderick Roy likes this.
    10-22-2016 11:38 PM
  3. Roderick Roy's Avatar
    Gently clean the gold contacts with some ispropyl alcohol (NOT water!!) wipes, polish with soft tissue and try again. The little wipes nurses use to give injections are good, or some glasses cleaners, methylated spirits... Don't touch the contacts with your fingers...
    Thanks Tim, I've tried that but it is still doing the same thing.
    Is this a common problem for S4s?
    10-24-2016 07:28 AM
  4. dugivisok's Avatar
    I had the same problem. Unfortunately had to change motherboard..
    11-24-2016 04:24 AM
  5. samlgremote's Avatar
    Change only sim and sd slot
    11-25-2016 09:47 AM

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