Probably because you have WiFi/WiFi calling enabled. Try disabling it!

WiFi calling is disabled, just checked.

Yes, that's what I think. Not good enough though if you ask me, network providers shouldn't rely on customers using their WiFi network to free up load. They should be able to offer the service we pay for IMO.

Hi ​@Slowmilton 

I am so sorry that you are experiencing network issues. 

Please use the following link to check the coverage on your area:
 https://www.idmobile.co.uk/help-and-advice/coverage

Or try to reinsert your SIM or try your SIM in another phone. This will determine whether the issue is with handset its SIM card itself.

If the issue persists, please try the following steps for iPhone:
iPhone (iOS) – Reset Network Settings
Go to Settings → General.
Tap Transfer or Reset iPhone.
Tap Reset.
Select Reset Network Settings.
Confirm the reset when prompted.
Once complete, return to the home screen and restart your iPhone.
 Samsung – Network Settings
From the Home screen, swipe up to access Apps.
Go to Settings → Connections → Mobile Networks.
Tap Network Opera that yours.
Turn Select Automatically on or off.

Network settings for Samsung: 
Go to Settings
Tap General management
Select Reset
Choose Reset network settings
Confirm by tapping Reset settings

Thank you,

Zandile 

It's just a network issue, the service is working haphazardly, I have 4 and 5G but the service is super slow. Not good enough when my 02 work phone is working fine.

Hi ​@Slowmilton 

Thank you for getting in touch with us, and I’m very sorry to hear about the slow network performance you’re experiencing.

Please send us a private message so we can securely access your account and escalate this to our technical team. We will investigate the issue further, especially as you mentioned that you have 4G and 5G but are still experiencing poor service.

Thank you,

Zandile 

Hi - just joined recently and generally have great coverage, but have a issue in London when sitting on a train waiting to leave Liverpool Street station, no signal whatsoever - no issue with my work phone on Vodafone. 

Hi ​@StevenK 

Thank you for getting in touch with us. I’m sorry to hear you’re experiencing poor signal on your train journey.

Could you please confirm if the area where you lose signal is underground, such as a subway or tunnel? This will help us determine if the issue is related to network coverage in enclosed spaces.

Thank you,

Zandile M

The iD Mobile Team 

Hi - thanks for responding. It is the Greater Anglia overground service which for my journey usually comes in and departs from platforms 11-14 of Liverpool Street Station. I lose signal as we pull into the station (so ok just outside) and when I am sitting there waiting to depart - again no signal. So is a bit enclosed but not underground. As I say on my work phone which is Vodafone I have signal. Thanks again. 

Hi ​@StevenK,

Thanks for sharing, are you able to confirm the postcode of the area where you are experiencing signal issues. Once we have this, we will be able to check the coverage and see if there are any reported issues in that area. 

Regards,

Gemma M

The iD Mobile Social Media Team