​@Scorpion  Hello try this is possible since you phone and Sim works fine for you try your sim in your wife's phone and hers in your's. Technology get be hit or miss once your tested out the above mentioned please report back..

I had a similar experience but with another network and it was due to a batch of faulty sim card's. It's worth a try. 

Joe 😉

Hi ​@Scorpion 

Thank you for getting in touch. 

We are sorry to hear of the issues you are facing. 

Can you please try ​@JoeKing’s suggestion and let us know how you get on?

Thanks, 

Natalie 

Hi we’ve tried this and still the same had phone checked at Apple Store no problems found thx

So data worked fine at the Apple Store location? What did the report say?

Hi ​@Scorpion Can you please try to do a network reset on both your devices try the below steps on the iPhone;

"Go to Settings.
Tap Phone.
Tap My Number.
Use the delete button to remove the old number.
Use the keypad to enter the new number.
Tap Save.
1. Go to Settings
2. Messages
3. Turn off iMessage.
4. Go to General
5. Reset
6. Reset Network Settings.
7. Once the iPhone is open.
8. Go to Settings
9. Messages Turn ON iMessage.
10.This will recognize the new sim and have it verified."

And the following on the Samsung.

Open Settings and then tap General management. Tap Reset, and then tap Reset network settings.

I’m still having problems tried switching SIM cards but no difference 

HI ​@Scorpion, 

I’m sorry to hear you’ve been having ongoing issues with your connection, especially after already trying a replacement SIM.

As your wife’s Samsung appears to stay connected in the same locations, this does suggest the issue may be related specifically to how your iPhone is connecting to the network rather than a general coverage problem.

As a troubleshooting step, please try setting your handset to 4G only mode to see if this improves the speed and stability of the service.

To do this on your iPhone:

1. Go to Settings
2. Tap Mobile Service or Cellular
3. Select Mobile Data Options
4. Tap Voice & Data
5. Select 4G or LTE

Please test the service after making this change to see whether the connection improves.

Owethu

 I had iPhone 13 with problems now I’ve got iPhone 16 but still happens but ill try doing what you said thx

Hi ​@Scorpion 

Thank you for letting us know.

Please let us know if the above resolves the issue or not.

-Michael Z

Hi still having problems with connection issues very slow took me around 10 mins to get signal to answer question could it be SIM card and would it be better getting an eSIM instead of sim thx