Hey there @PRB, thank you for reaching out.
How long has this been an issue for please?
Have you tried resetting network settings?
The below Community page may also help:
https://community.idmobile.co.uk/troubleshooting-177
Also, please take a look at our coverage checker, which will show you what your signal strength should be like in your area, for all of 3G/4G/5G, for both indoors and outdoors.
https://www.idmobile.co.uk/help-and-advice/coverage#coverage-info
Furthermore, please take a look at our network partner Three's network status checker, which will show if there is any maintenance or performance upgrades going on in your area. If the website states that's the case, then it's likely that this is disrupting your coverage, and we hope that this is resolved soon for you.
https://www.three.co.uk/support/network_and_coverage/network_support
Please take a look at both of these. If you believe you should be experiencing better signal than you are, or if the networks status checker on Three's website isn't showing any upgrades or maintenance, then please do let us know or contact us via our live-chat:
https://www.idmobile.co.uk/live-chat
Thanks,
Tyler