4G Router have sim card slot 4G antennas for network connectivity. User access inter via wifi or ethernet RJ45 port. 4G router available from Tp-Link, D-link, Tenda brand & usually are unlocked which means any sim can be used in sim slot provided. Usually micro or mini sim card are used in 4g routers. Any 4G sim card ca be used for Airtel, Jio, Vi or Bsnl 4G network in India.

Here is list of 4G Routers with unlocked sim card slot for all kind of 4G sim card support:
Tp-Link MR600 4G+ AC1200 CAT6 GIGABIT ROUTER


– CAT6 LTE speed DL upto 300Mbps & UL upto 50Mbps
– One RJ45 WAN/LAN gigabit port
– Three RJ45 gigabit LAN port
– 2.4ghz N300 + 5ghz AC867mbps wifi support
– SMS support, Parental Control
– Guest WI-Fi, Wi-Fi schedule
– Easy management via Tp-Link app
– Tp-Link Onemesh support
more details
Tp-Link MR100 4G N300 LTE CAT4 WIFI ROUTER



– CAT4 LTE speed DL upto 150Mbps & UL upto 50Mbps
– One RJ45 WAN/LAN port + one RJ45 LAN port
– 2.4ghz N300 wifi network support
– SMS support, Parental Control
– Guest WI-Fi, Wi-Fi schedule
more details
D-Link DWR-920V 4G N300 LTE CAT4 VoLTE ROUTER



– CAT4 LTE speed DL upto 150Mbps & UL upto 50Mbps
– One RJ45 WAN/LAN port + one RJ45 LAN port
– ONE RJ11 voice port with VoLTE support
– 2.4ghz N300 wifi network support
– SMS support, Parental Control
– Guest WI-Fi, Wi-Fi schedule
more details
TENDA 4G06 4G VoLTE N300 LTE CAT4 WIFI ROUTER



– CAT4 LTE speed DL upto 150Mbps & UL upto 50Mbps
– One RJ45 WAN/LAN port + one RJ45 LAN port
– ONE RJ11 voice port with VoLTE support
– 2.4ghz N300 wifi network support
– SMS support, Parental Control
– Guest WI-Fi, Wi-Fi schedule
– Easy management via Tenda app
more details
Tp-Link MR200 4G AC750 LTE CAT4 WIFI ROUTER



– CAT4 LTE speed DL upto 150Mbps & UL upto 50Mbps
– One RJ45 WAN/LAN port + three RJ45 LAN port
– 2.4ghz N300 + 5ghz 433mbps wifi network support
– SMS support, Parental Control
– Guest WI-Fi, Wi-Fi schedule
– BAND 5 support missing used by JIO
– Easy management via Tp-Link app
– Tp-Link Onemesh support
more details
Tp-Link MR400 4G AC1200 LTE CAT4 WIFI ROUTER



– CAT4 LTE speed DL upto 150Mbps & UL upto 50Mbps
– One RJ45 WAN/LAN port + three RJ45 LAN port
– 2.4ghz N300 + 5ghz 867mbps wifi network support
– SMS support, Parental Control
– Guest WI-Fi, Wi-Fi schedule
– BAND 5 support missing used by JIO
– Easy management via Tp-Link app
– Tp-Link Onemesh support
more details
TENDA 4G03 4G N300 LTE CAT4 WIFI ROUTER

CAT4 LTE speed DL upto 150Mbps & UL upto 50Mbps
– One RJ45 WAN/LAN port + one RJ45 LAN port
– 2.4ghz N300 wifi network support
– SMS support, Parental Control
– Guest WI-Fi, Wi-Fi schedule
– Easy management via Tenda app
more details

Few 4G router support voice calls too where one can connect any analogue wired landline or cordless phone for calling using the sim card mobile number. Another useful feature is carrier aggregation or 4G+ which allow the 4G router to access two or more different mobile frequency at same time for better speeds. Currently we have Tp-Link MR600 only that supports 2CA. Hopefully more routers in future will support CA aka 4g+ network for better data speeds.