I'm urgently looking for any of the following routers:?

Based on the routers you requested, the ZTE MF927U or Huawei B315 would be excellent options. The ZTE MF927U is a pocket sized 4G LTE mobile Wi-Fi router that's great for travel or taking your internet connection anywhere. It's nicely priced at R649 in the search results. The Huawei B315 is also a pocket router but supports faster speeds up to 150Mbps which would be better if you need to stream video or have multiple devices connected simultaneously. It comes in at R1695. Both require a SIM card to connect to the mobile network. Let me know if you need any other details on these routers to help make your selection!