Phone calls on iphone 11 pro

This seems like your carrier issue, Contact your Carrier (Cellular Service Provider) The agency who issued the SIM to you.

Call Failed or Dropped Calls / Disconnecting

In telecommunications, a dropped-call / Auto Disconnecting Calls / Call-Failed Muted conversation are mainly due to technical reasons / fault at the carrier's end. At times the calls are cut off before the speaking parties had finished their conversation and before one of them had hung up (dropped calls or Call Failed or Auto Disconnection or muted calls).

Few Reasons Your device Keeps Muting / Dropping / Disconnecting Calls or encounter Call Failed.

• Your Signal Is Weak.
• It's Raining (Cats & Dog)
• The Cell Tower Is Overloaded / Heavy Traffic (Telecommunication)
• You've Misunderstood Your Signal Strength
• You are moving and the signal weakens while changing from one tower to another

Options Are...

• Turn on Airplane mode, wait for 10-15 secs and turn off airplane mode.
• Restart your iPhone (Restart your iPhone, iPad, or iPod touch - Apple Support)
• Force Restart your iPhone )Force restart iPhone - Apple Support)
• Check you Battery health
• Take the SIM out and Put it back again
• Change you SIM, if it is damaged
• Time to contact your Carrier / Change if required

Your answer are totally invalid. I have experienced dropped calls for the past two weeks. These calls consistently happen when there are 4 bars showing on my phone. my carrier reports a very strong signal to my phone and no problem with phone towers. I have followed every one of these steps including calling tech support twice. The second time a diagnostic was completed and there factory restart suggested did no work. After searching the web, I have found that it is based with the new version of iOS and that it is happening randomly to iPhone 11 owners. It is time that you accept that it is a problem and fix it. I now have to resort to zoom to conduct business calls. As I am under a stay-at-home order due to the pandemic, there is no apple store to go too and your tech support although emphasizing with this problem will no send me a new phone. To say I am beyond disappointed in Apple at this moment is an understatement. I suggest that you just fix the problem.