Why does my WiFi calling say invalid SIM?

The error ER05 invalid SIM can occur if the SIM card isn’t working properly. To begin with, it incurs when you haven’t gotten the SIM card enabled for Wi-Fi calling by the specific network service provider.

How do you fix an invalid SIM card on an iPhone?

If you see ‘invalid SIM’ or ‘no SIM’ on your iPhone or iPad

Make sure that you have an active plan with your wireless carrier.
Update your iPhone or iPad to the latest version of iOS.
Restart your iPhone or iPad.
Check for a carrier settings update.

Why do I get invalid SIM on my iPhone?

Your iPhone may say Invalid SIM if there’s software error within the cellular settings. You’ll have to reenter them after resetting your iPhone. To reset your iPhone’s network settings, go to Settings -> General -> Reset -> Reset Network Settings. You’ll have to enter your iPhone passcode, then confirm the reset.

How do I activate an invalid SIM?

The steps are discussed in detail for Android and iOS.

Reboot Your Device.
Re-Insert SIM Card.
Switch to Supported Network Operator.
Reset Network Settings.
Switch Airplane Mode On and Off.
Activate Safe Mode.
Update Software.
Factory Reset.

Why won’t my SIM card work in a different phone?

If the SIM card and phone serial number didn’t match, the phone simply wouldn’t work. The SIM card wouldn’t work in other phones, and the phone wouldn’t work with other SIM cards. If you lived in North America, you could usually determine whether your phone is GSM or CDMA based on the service provider you used.

Why can’t i enable Wi-Fi calling?

Here are some reasons why WiFi calling may not be working: The WiFi calling setting is turned off in your phone’s settings. You don’t have a WiFi network connection. Your device will prioritize a network connection over WiFi when the connection is strong enough to make and receive calls.

Why won’t my iPhone do Wi-Fi calling?

If you can’t turn on or use Wi-Fi Calling, make sure that your carrier offers Wi-Fi Calling and that your devices have the latest software. Go to Settings > Phone > Wi-Fi Calling and make sure that Wi-Fi Calling is on. Restart your iPhone. Connect to a different Wi-Fi network.

What happens if your phone says invalid SIM?

If you see the “Invalid SIM” or “No SIM” message, it could mean that you’re trying to use the iPhone without a carrier and a plan. If that’s the case, then most of the device’s functionality is going to be compromised.

What do I do if my SIM card is invalid?

How to fix no sim card error on Android?

Select correct network operator.
Once remove SIM card and battery.
Select network mode to auto.
Manually enter APN settings.
Use your phone in Safe Mode.
Clear the cache.

Can I switch my SIM card to another phone?

You can often switch your SIM card to a different phone, provided the phone is unlocked (meaning, it is not tied to a particular carrier or device) and the new phone will accept the SIM card. All you need to do is remove the SIM from the phone it is in currently, then place it into the new unlocked phone.

What happens if you switch SIM cards in phones?

When you remove your SIM card from your phone and replace it with another card, you lose access to any information on the original card. This information is still stored on the old card, so any phone numbers, addresses or text messages that you lose are available if you insert the old card into the device.