Nokia 5G Router Please pay attention to the following before ordering: The router works with all networks (stc, zain, mobily), but if you have never used Zain on it. However, if you use Zain even once, the router will lock and will not operate with any other SIM card other than Zain. So, whoever wants the router for stc or mobily SIM cards should not put a Zain SIM card inside the router, because after that, only Zain will work. In summary: If you buy the router and will only use it with stc and mobily, it will work perfectly for you. But as soon as you put in a Zain SIM card, it will lock onto it and will not operate with anything other than Zain.