If an “The accessory may not be compatible” alert appears on your Apple device. This alert can appear when the accessory is damaged, is not certified by Apple or is not compatible with the device, or if the device has a damaged or dirty port. When your iPhone says, “This accessory may not be compatible,” the first thing you should do is try to reconnect your iPhone. Tap Discard and remove the accessory from the Lightning port on the iPhone.
Reconnect your iPhone to check if the same pop-up window reappears. Most of the time, when your iPhone keeps saying, “The accessory is not compatible,” the charging cable you're using for your iPhone isn't MFi certified. Once fixed, your iPhone will recognize your SIM card and you can use your iPhone like a regular phone. If the original cable doesn't work and your iPhone is covered by an AppleCare plan, you can exchange your old iPhone charger for a new one at your local Apple Store.
Many times it happens that your iPhone cannot recognize a SIM card and shows an error message that says that the SIM card is not compatible. Check your iPhone's Lightning port if you're having problems with iPhone cables or other add-ons. It includes a 12 MP main camera and the same A15 Bionic processor used by the flagship iPhone 13 and iPhone 14 models. To avoid the problem of the incompatible SIM card and activate your iPhone, connect your iPhone to your computer and launch the latest version of iTunes.
The following are the methods to help you avoid the SIM card problem on your old iPhone 5s or the newest iPhone 12 or any other model. Your iPhone will locate it on the main screen of your device and you will have successfully avoided the problem of the incompatible SIM card in your device. AnyUnlock: iPhone Password Unlocker launched a new feature that allows you to unlock your iPhone and enjoy any operator without SIM restrictions. Examine the end of the accessory's Lightning connector, which is the part you connect to the iPhone's Lightning port, to see if it's discolored or frayed, as they may be causing the iPhone to say: “This accessory may not be compatible.