Can't receive calls, via cellular or wifi - missing important calls - iPhone

You might have a damaged / faulty iD SIM in your iPhone, ​@XMC10. 

• How do I get a replacement SIM or eSIM? F.A.Q.

This community article might help. 

Hi thanks for the reply.

I doubt it’s actually damaged as ISTR for the last couple of contract changes ID have done it over the air (i.e. no physical SIM change) and this SIM hasn’t been ejected even once from receipt a couple of years ago until today when I “cleaned” it. There’s always a case on the iPhone.

I’ve had the iPhone checked out by Apple and they said “all OK the issue is with the Telco”. 

Coincidentally, I didn’t mention this above as I didn’t think it relevant, but I now get less 5G when out and about than 2 years ago. Whether this is the telcos reducing service levels or a function of whatever is going on with the iPhone I’ve no idea. Not no 5G but mostly 4G in places where there was previously a good 5G service. Odd.

Does the iD SIM behave the same way in a different phone, ​@XMC10? 

Unfortunately I don’t have access to another phone to test.

A replacement iD SIM might fix these issues, ​@XMC10. 

I’ll try ordering one as you suggested.

QUICK THOUGHT - could I replace the SIM with an eSIM? Would avoid any physical issues in future?

Did the problems start when you upgraded to using iOS 18 on your iPhone, ​@XMC10? 

Wasn’t iOS 18 released last autumn. 

No the problems existed before the launch of ‘18.

Coincidentally ‘18 seems to have delivered better battery life which is unusual as operating systems become more complex.

eSIM received and activated - now to wait on an incoming call…

Thanks for your input.

Hey there ​@XMC10, we’re sorry to hear that.

As kindly advised by ​@andewhite, I’d recommend trying a replacement SIM card first, and see if that helps.

• How do I get a replacement SIM or eSIM? F.A.Q.

If not, please do let us know so we can discuss and investigate further.

Thanks,

Tyler

Thanks ​@Tyler I’ve switched to an eSIM and will see how that works out for now.

No problem at all ​@XMC10, keep us updated if needed.

Thanks,

Tyler

Hey Tyler, just received my first incoming calls sine the switch to an eSIM and both (from different parties) failed that was with wifi calling enabled. 

So in essence no change from the original post. Ideas?

Hey there ​@XMC10, sorry to hear that.

What iPhone do you have just to clarify?

Is the issue still only with calls?

Thanks,

Tyler

Yes I don’t appear to have any other wifi issues.  
 

iPhone 13 fully checked and cleared by Apple just before the original post.

Hi ​@XMC10 

Are you able to turn off Wi-Fi calling and trying? Or possible forcing Wi-Fi calling by switching flight mode on with Wi-Fi?

Does the issue with not receiving calls happen everywhere or just in a certain location(s)?

Tom

As I detailed above it happens in multiple locations, mostly at home but a week ago I gave a friend my number standing in a park with a 2 bar signal and when he called he received no ring tone and a report that I was unavailable while standing there. 30 seconds later I got the missed call message.

At home I’ve tried it both with and without wifi calling, makes no difference (cell signal usually 1 bar at home hence the need for wifi calling to work). 

No issues using FaceTime but not everyone has an iPhone or if they do they often forget and use cellular...

We have sent you a message now ​@XMC10  so we can look into this further with you. 

We look forward to your reply.