You may follow this article to choose a SIM card for your Reolink 4G cameras in the United States.

Applies to: Reolink Go, Reolink Go PT, Reolink Go Plus, Reolink Go PT Plus, KEEN Ranger PT, Reolink Duo 4G, Duo 2 LTE, and TrackMix LTE.

If T-Mobile has a strong 4G signal covered in your area, it is recommended to choose a T-Mobile prepaid data-only SIM card.

And some tested virtual SIM cards like Mint and FreedomPop (based on AT&T) can also work with our cameras properly.  

You could purchase the SIM cards from the link below and activate these SIM cards on their website.

T-Mobile:

https://prepaid.t-mobile.com/bring-your-own-device

Note: Reolink 4G cameras can only work with a 3G or 4G network, it doesn't support a 5G network. Please choose a 4G T-Mobile network to activate. As of July 1, 2022, T-Mobile’s older 3G UMTS network will be retired.

Mint:

https://www.amazon.com/Mint-Mobile-Starter-Compatibility-SIM/dp/B0786RD524/ref=sr_1_1_sspa?ie=UTF8&qid=1540433501&sr=8-1-spons&keywords=Ultra+Mobile&psc=1

FreedomPop:

https://www.freedompop.com/plans 

Note: If your camera model is Go PT, you will need to import APN settings to get the SIM card to work. The APN=ERESELLER, you can refer to the link here to import APN: How to Import APN information to Reolink Go PT