Hello Julius! It seems like you're encountering an issue with using your Smart promo on your Huawei 4G router. The error message "Connected to device, Can't provide internet" usually indicates that the SIM card is successfully connected to the network but there might be an issue with the APN settings, network compatibility, or the type of service provided by the promo.
Here are a few steps you can try to troubleshoot the issue:
1. Check APN Settings: Make sure that the Access Point Name (APN) settings on your Huawei 4G router are correctly configured for Smart's network. You can usually find the correct APN settings on Smart's website or by contacting their customer support.
2. Network Compatibility: Since your prepaid WiFi is a Huawei 4G router, it should be compatible with Smart's 4G network. However, if the promo is specifically for 5G, it might not work if you are not in a 5G coverage area. You can try disabling 5G on your device if possible.
3. Promo Restrictions: Some promos are designed for mobile use only and may not work properly when used on a broadband device like a WiFi router. It's best to check with Smart's customer service or website to see if the promo you purchased is intended for WiFi router use.
4. Try a Different Promo: If the current promo is not working for your WiFi router, you can try purchasing a different promo that is explicitly advertised for broadband use. Smart may have specific promos for prepaid WiFi devices that offer better compatibility.
If none of the above steps resolve the issue, I recommend reaching out to Smart's customer support for further assistance. They can provide specific guidance based on your account and device details. Hopefully, you'll be able to enjoy seamless internet connectivity on your Huawei 4G router soon. Let me know if you need further help!
PH
, so what should I do? Does the unli 5G the problem since I'm not in a 5G area? Or it's just the promo internet for phone and not meant to be on wifi? So what promo should I buy in order to put it in my Wifi, pls help, Thank you! 
, wala akong mahanap da YT eh