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LB2120-100UKS
Set Contains:
4G LTE Modem (LB2120)
Power adapter
Ethernet cable
Quick start guide
Robert Garcia
Reviewed in the United States on December 29, 2024
I ordered this as part of my Spectrum Outage Contingency Plan, since I periodically work from home and the outages seem to be happening more frequently. When configuring this unit as a backup to your home's main router, you must ensure that the port you have this modem plugged into is configured as a WAN uplink. You must also ensure you have an active SIM installed in the modem, I purchased a cheap one for data only and currently have it riding on T-Mobile's network.You must also configure the modem to act as a bridge since by default, it is configured as a router of it's own. Configuring it as a bridge allows it to handoff the WAN connectivity to your home's router. Lastly, create a dual-WAN failover and failback rule if your router allows you to. This will ensure your home's router fails over from WAN 1 to WAN 2 and fails back when WAN 1 is restored.After simulating a Spectrum outage by pulling the coax connection, my home's router failed over successfully to this modem. My speedtest came back 40 x 30 mb/s which is fine for LTE speeds. I was able to continue working from home and stream TV along with periodic cell phone usage. So in my book, if you're looking for a cellular failover for your home, this is a good modem that can do that.
Customer
Reviewed in the United States on August 14, 2021
UPDATE:I had disabled the internet on this device. While I was out of town, I had lost power, and when the power came back online, I guess the internet was kicked back on. It drained my prepaid card within days and NO devices. Now Im out about $100 in prepaid data. I am NOT HAPPY. DO NOT BUY THISI was very excited to setup this device as a failover WAN2 on my network. Once I got the prepaid SIM card from my carrier, I set it up and put the device in bridge mode. My router shows that it has not made any external connections over the WAN2 interface. 0 data has been streamed over the internet through this device. AND yet I have used up nearly 1GB of data in just a few hours. This is ENTIRELY unacceptable as a bridged failover device. I will be contacting NetGear customer support to see what I can do and if this is not able to be rectified I will be returning the product and looking for another LTE modem.
Josh1e
Reviewed in the United Kingdom on December 20, 2021
technically minded and still found it tough to get running. but.. otherwise great and worth persevering.so, out of the box i put a giff gaff sim in and selected the giffgaff apn. didn't work. created a new apn with giffgaffs settings from google, still wouldn't connect. connected it to my existing network and this allowed me to update the firmware. then it connected fine. (tried my vodafone sim before the firmware update & that worked). so obviously an issue with older firmware. good signal strength indoors and lots of useful features like alerts when certain things happen (internet failover, etc.)No 5G support but knew that before buying. No 5G in my area so doesn't matter. is connected not only at 4G but 4G LTE indoors!cheaper than others but performance is fine once setup.
W. Scott
Reviewed in the United Kingdom on December 5, 2020
This product does exactly what it says in the box, reliably and without fuss or fiddle.We live in a rural area with low speed (not fibre to the premises) 8Mbps broadband which is insufficient to manage much more than one HD stream reliably.With this Netgear modem, using a 4G SIM, we have a minimum 35Mbps down / 25Mbps up speed which is capable of handling everything we need and so our internet connection is now no longer an issue.I’m using an ASUS AC68U router and simply plugged the Netgear modem into this using a network cable, no fiddling, configuration or messing about required. Job done. Happy everyone.PS I had tried using a HUAWEI MiFi USB dongle to achieve the same thing with my ASUS router and it was unusably unreliable. Don’t know whether the issue was with the dongle itself or with the ASUS management of it.
Guy Chapman
Reviewed in the United Kingdom on May 28, 2019
I work from home so reliable WiFi is essential. After a series of Virmin outages I bought this little gadget and a tenner a month 10Gb SIM-only plan from Three, I connected it to my UniFi Security Gateway and it works perfectly.You can have it send texts when it switches to 4G and back to wireline, and when the data usage gets up to a set percentage of your limit. The only downside is there doesn't seem to eb any web service or SNMP interface to reflect status, so you're left running a script to parse the HTML if you want to show status in your network management tooling.
Marc
Reviewed in the United Kingdom on February 11, 2019
I felt like I had to write this review based on the amount of negative review there are for this product. For the everyday user who want to use this product to replace wired broadband at home with a 4/3G connection, this modem works perfectly.I have it connected in bridge mode to a Google WiFi and it works flawlessly - I haven't needed to restart it or change any settings from the initial setup. Setting up was really simple, plug into a wall and insert your SIM (micro) within a couple of minutes the modem had auto-detected my mobile network settings and everything was ready to go.From this point you can either use the modem with 1 computer connected via ethernet, or connect it to a router in bridge mode to provide an internet connection to your WiFi network.I spent so long hesitating to purchase this because of all of the negative reviews, but I think the majority of these are in reference to the failsafe mode where it works alongside a broadband connection - this isn't the scenario I'm using it in.
Robfg
Reviewed in the United Kingdom on December 21, 2018
Doesn't stay connected to LTE and doesn't reconnect automaticallyI've bought the LB2120 as a backup to my wired internet connection - when it drops, the network will failover to using an LTE connection. My home is a "Smart Home" so having a fail over for this is important for it to stay "smart".The setup of the router was pretty simple - bridge mode sitting between my ISP supplied router and Google Wifi. Initially the bridge seemed fine and no problems with the cable connections, on an O2 PAYG sim 4 bars, happy days. Unplug the cable and we switch to LTE, back in and we're in business again. Happy days, leave it running in a dark corner doing its thing. A happy camper so far.Checking back in later I see that the LTE connection indicator is redamber - a quick google and this means LTE is disconnected. OK a quick power cycle and we're back in business, however I'm paranoid now and checking more regularly (there's no alerting or logs to help here!). Lo and behold each time I check we're disconnected from LTE, checked settings, APN, factory resets, restarts and on O2 PAYG (plenty of credit!) it barely stays connected for 2h with a 4 bar signal.OK - so I have a monthly EE sim, try that - the connection seems a little more stable (at two bars) however inevitably I see the box disconnected and have to manually connect it again. Same with a 3 PAYG sim. Added a 4g external aerial slightly better signal - still disconnecting and not reconnecting.Having trawled the Netgear boards for details it's a common problem, no firmware updates available and no obvious answer. This modem simply does not reconnect to LTE automatically (yes I've configured auto connect) when it drops. From the management page, if I click connect it does so first time, having to manually reconnect renders this device useless as a fail over. The inability to automatically respond to a failure (e.g. using a syslog server) just compounds my view that this box isn't fit for purpose.I have until the end of Jan, if no resolution by then this box will be heading back to Amazon. If you do take a chance on this box, don't throw away those boxes too soon!
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