Hey Janey139,
If your iPhone 12 Pro Max is experiencing a 'No Service' issue despite trying multiple SIM cards and following Apple's suggestions, and given that your SIM works in other iPhones, it does seem plausible that the issue might be hardware-related, potentially with the SIM card reader. Here are some additional steps and considerations:
1. Check for Physical Damage: Inspect the SIM card tray and slot for any signs of damage or debris. Clean the tray and the contacts gently with a soft, dry cloth.
2. Reset Network Settings:
- This will reset all network settings, including Wi-Fi passwords, cellular settings, and VPN configurations.
- Go to Settings > General > Reset > Reset Network Settings.
3. Try a Forced Restart:
- Sometimes a forced restart can resolve unexpected hardware or software issues.
- Press and quickly release the Volume Up button, then press and quickly release the Volume Down button. Finally, press and hold the Side button until the Apple logo appears.
4. Check Carrier Settings Update:
- Ensure that your carrier settings are up to date.
- Go to Settings > General > About. If an update is available, you'll see an option to update your carrier settings.
5. Test in Safe Mode (if applicable):
- Some users have found that starting the iPhone in Safe Mode (if this feature is available) can help diagnose if a third-party app or service is causing the issue.
6. Consult with a Different Repair Shop:
- Since the first shop suggested a potential issue with the SIM reader, it might be worth getting a second opinion from another repair service.
7. Contact Apple Again or Visit Apple Store:
- Recontact Apple Support or visit an Apple Store or authorized service provider. It’s crucial to stress that the issue persists after trying multiple SIM cards and following their initial suggestions.
8. Backup and Restore:
- As a last resort, back up your iPhone and then perform a factory reset via iTunes/Finder. Restore your device from the backup and check if the issue persists.
- This can be particularly helpful if there's a software glitch that's not resolved by standard troubleshooting.
9. Consider Downgrading iOS (with caution):
- If this issue started after an iOS update and there's a window available to downgrade to an earlier version of iOS, you might consider this. However, be aware that downgrading can be risky and might lead to data loss or other issues.
10. Check for Any Recalls or Known Issues:
- Occasionally, manufacturers acknowledge widespread issues and offer special repair programs. Check Apple's website or contact them to see if your model is covered under any such program.
If it turns out to be a hardware issue with the SIM reader, and if the device is out of warranty, you’ll need to decide whether to pay for a repair or consider replacing the device, depending on the cost-effectiveness.
Hope all else is well, and good luck.
