In this solution, you just have to turn on and turn off the Airplane mode. This solution is also useful when the Wi-Fi connection and data connection is not working properly. 2.) By Switching On/Off the Airplane Mode : After turning on your device, If still, you are facing the same issue, then move further with the next solutions. It will prompt you to Switch off and Restart the device. To reboot your phone, just press and hold the Power button of your device. So, whenever you received an “Invalid SIM card” error, then instantly reboot your phone.

Sometimes, it happens even when your SIM card is in SIM tray. When your device does not recognize or detect the SIM card, the problem comes. This fix can quickly solve your problem within seconds. This is one of the easiest ways to resolve the SIM issue on your smart android device. Fix Invalid SIM Card Issue on your smartphone 1.) By Restarting your Android Phone : For that, here we are going to discuss some fixes which can resolve the Invalid SIM card issue. So, it is necessary to get solution regarding the SIM issue as soon as possible. In short, Whenever you get some SIM issue on your device, it means something wrong happened with the SIM card.

The unrecognisable SIM card can also cause this Invalid SIM error.

If your SIM card connection is faulty, then the error occurs.

If there is no SIM card inserted in your device, the error message comes.

The Invalid SIM card message appears when this three condition is taking place. Now, take a look at the detailed descriptions of the topic and keep using SIM card without an error message. Because the Invalid SIM mean and its fixes may be same also for any android users. After that, we will also discuss that how to fix that SIM error on HTC devices. Here, we are going to discuss the what does Invalid SIM mean on HTC Android device. They also do not know that What Does Invalid SIM mean? So, here we will discuss that what does mean the “Invalid SIM card”.

Because of that, some users of smartphone gets irritating. This error message comes even when there is no problem in the SIM card. But, when you insert SIM card in the device, it shows an error like “Invalid SIM Card”. Some smartphones come with Dual SIM feature, while some are having Single SIM. They all are launched their smartphone with some unique specs. Nowadays, so many smartphone manufacturers are in the market.

Invalid sim card