Invalid sim card showing on phone since,I've joined smarty cannot make calls

[Decembersangel]

Hi @Stewart_2774991 👋
When you say you can't make calls are you still able to text and use data? Are you in the Midlands? Is the make/model of your phone supported by SMARTY? Are you saying the SIM card is 'Invalid' because you can't make or receive calls or is the an 'Invalid SIM' message?
I ask this as SMARTY recently turned off their 3G network. Unless your phone has the capability/ability for WiFi calling /VoLTE and it is enabled then you will not be able to make/receive calls (but you can still text and use data). 
If this is the case then it may be down to the reason I have outlined in a post I made with regards to this problem......
https://community.smarty.co.uk/t5/chats-hacks/can-t-make-receive-calls-not-necessarily-a-network-pro...

[JodieC]

Hi @Stewart_2774991 

Thank you for reaching out to our SMARTY community forum! 

Please ensure you are using the correct SIM and not the bonus SIM that is included in the original SIM packaging. This can be a common mistake that is easily resolved! 

If you are still experiencing issues after testing the SIM, please reach out to our webchat team so we can go over a few toggling steps to resolve the issue.

https://smarty.co.uk/contact

- Jodie