New 4G MiFi Broadband - Can't Connect

[jacobahill]

Hi all,

I'm a new customer with Mobile Broadband and received my Data Only SIM and MiFi 4g router today. However, I've been unable to connect and am getting a solid red light on the signal indicator of the router.

For a bit of background, I've already done a few rounds of reinserting the SIM and ensuring it's properly inserted. My devices can connect just fine to the router itself but have no internet.

When accessing the router menu in my browser it's telling me I have an invalid SIM inserted, but it's the one that came with it! I tried my phone's SIM in the device and it connected, so I don't think there's anything wrong with the hardware.

For what it's worth, it did take me a couple of hours to have my My3 account initialised after delivery, so I'm not sure if it's just taking time to activate the SIM, but I don't see why this would be the case if it's supposed to be plug-and-play? My worry is that the SIM itself is a dud, but I wonder if others have had similar experiences and just had to wait it out until everything was activated.

Many thanks.

[miffed]

I've just received 2 and exactly the same issue.

I'm beginning to think I've made a huge mistake swapping from BT 

[Dineo]

I’ve had 2 replacements and about to get a 3rd. As they are refusing to cancel my contact. Devices both had the same issue. 

[JonathanB]

Hi @jacobahill,

The SIMs usually activate on the day of delivery or purchase from store automatically. It may be worth popping the SIM in your phone to see if it's showing active in there, and if it's still not came online in the meantime since posting, please get in touch with customer services so that they can check if there's an issue.

Thanks,
Jonathan

[Wil]

April 2025...and same problem with their Huawei mi-fi router. No joy with with on-line customer service or a trip to the 3 store. Lucky to still be within the 30 day cancellation period...this garbage is headed back to the junkyard. Warning..Stat away from 3...they promise good service but don't deliver!!

[sc1999]

https://community.three.co.uk/t5/Devices/Issue-getting-SIM-card-activated/m-p/19972