Step 1: Tap General in Settings on iPhone. Please remember your Wi-Fi passwords for the sake of reconnecting the internet afterward. This can rule out some errors from wrong network settings by remove existing settings like Wi-Fi and cellular data. Step 4: Switch off the Airplane Mode button.Īnother network-related fault you can check is to reset network settings. Step 3: Restart iPhone, then go to Airplane Mode in Settings.
Step 2: Choose Airplane Mode and turn the Airplane Mode switch on. This may do the trick because it can swiftly refresh and restart the wireless radios and rule out related glitches. First you can toggle the airplane mode on and off. If restarting iPhone doesn't work, you can examine other minor errors like cellular or wireless network connectivity. IPhone 6 and older, hold the power and home buttons at the same time until the Apple logo is shown on the interface. IPhone 7 and 7 Plus, simultaneously press the power and volume down buttons until the Apple logo appears. Then keep holding the power button till the Apple logo pops up on the screen. IPhone 8 and newer models, briefly press and quickly release the volume up button and the volume down button respectively. In this case, forcibly rebooting the device first may possibly resolve the issue on iPhone. If the circumstance is the other way around, it might be attributed to the iPhone.
If the iPhone SIM not invalid issue goes away, then you can be sure that the problem goes wrong with the card itself. Associated steps are the same as the ones in the first approach. Just put a different into the iPhone card by borrowing the friends or relatives' one you trust. Moreover, you can change the SIM card so as to determine whether the matter results from iPhone or the SIM card problem. Step 4: Push back the tray that hold the SIM. Step 3: See if the card gets damaged, or otherwise place it back with the right orientation.
Step 2: Push the tool and pull the slot out, then take out the SIM. Step 1: Put a SIM ejector into the tiny tray of iPhone. It should be noted that switching off the iPhone before reinstalling the card is a must. To make sure the trouble is not caused by this, try to remove and then reinsert the SIM card on iPhone. Given that the iPhone says SIM card error message, it is necessary to check whether the SIM card is dislodged or loose. If the iPhone shows SIM card error message or other like invalid SIM card, then following methods are worth trying. This is indeed annoying as we are unable to send messages, use cellular data and the like.
FIX INVALID SIM CARD HOW TO
Part 4: How to Fix iPhone Not Reading SIM card?Īlthough the SIM card is inserted in our iPhone, yet the device cannot recognize or detect it. The iPhone 4 and 4s have a microSIM, and newer iPhone models use a smaller and more modern nanoSIM. That is the slot that saves SIM card.įor iPhone 4 and later, the right side of the iPhone, which is close to the sleep/wake or side button, is the location of SIM card. Its location relies on the iPhone models.įor iPhone, iPhone 3G, and iPhone 3GS, there is a tray with a tiny hole between the sleep or wake button and headphone jack which is at the top of the iPhone. Part 3: How to Find SIM Card?īefore looking at the fixes to iPhone SIM card error message problem, you have to know where the SIM card is. So why does this issue appear on the iPhone? There are some possible reasons as presented below.Ĥ. The problem of iPhone SIM not valid may appears on iPhone 5/6/7 and other models. Part 2: Why Does iPhone SIM Card Error Occur?
But how do you know your SIM not valid? Well, if you cannot see the carrier name and signal dots or bars at the top screen of your iPhone, or invalid and searching, the iPhone has a problem with the SIM card. If there is iPhone not reading SIM card, it means the failure to connect wireless carrier's network. Subscriber identification module, abbreviated as SIM, is a card that saves subscribers' information for a network and activates the internet connectivity services.
FIX INVALID SIM CARD INSTALL
Part 1: What Is SIM Card? Part 2: Why Does iPhone SIM Card Error Occur? Part 3: How to Find SIM Card? Part 4: How to Fix iPhone Not Reading SIM Card? 4.1 Remove SIM card and reinstall it 4.2 Try a different SIM card 4.3 Force Restart iPhone 4.4 Turn Airplane Mode on and off 4.5 Reset network settings 4.6 Update the carrier settings 4.7 Reset all settings 4.8 Use TunesKit iOS System Recovery 4.9 Install the latest iOS version 4.10 Check iPhone account Part 5: The Bottom Line Part 1: What Is SIM card?įirst and foremost, we need to understand what SIM means.