To make your iPhone look like a call failed, follow these steps:
1. Turn on Airplane Mode and then turn it off.
2. Eject your SIM card and reinsert it.
3. Change the network selection settings.
4. Reset your iPhone's network settings.
If these steps don't work, there may be a problem with your cellular provider or your iPhone. You can try restarting your phone or resetting your SIM card. Keep in mind that resetting your network settings will erase any saved passwords.
Please note that intentionally making your iPhone look like a call failed may not serve a legitimate purpose and could potentially be misleading or deceptive. It is important to use your devices in a responsible and ethical manner.