Applies to: Reolink Go
The Reolink Go could only support the prepaid AT&T sim card with cellular data, text, voice call, 3 in 1 SIM card.
So if your AT&T sim card is postpaid, contract or data only SIM card, the camera may not work with it. In addition，the camera could work with prepaid T-mobile sim card without issue, if it's possible you can buy a prepaid T-mobile SIM card installed into the camera.
And we have tested the virtual SIM card below which could work with our camera without any issue.
If your local AT&T has a strong 4G signal covered, we recommend the two AT&T sim cards and two virtual AT&T sim cards cricket and FreedomPop,
If your local T-mobile has a strong 4G signal covered, we recommend one T-mobile(much more cheaper, 2GB/$10 per month) and four virtual Tracfone(T-mobile), US mobile(white sim card), Ting, MetroPCS.
You could refer to the below to choose the most suitable sim card for the camera.
You could buy these sim cards in the link below and activate these sim cards on their website conveniently.
US Mobile :
TracFone 3-in-1 SIM :