https://community.arlo.com/t5/Arlo-Go/What-is-the-sim-card-usage-for/m-p/1261764#M464 The SIM card is only for the Arlo Go, which uses cell service for the Internet access. No other Arlo camera uses a SIM card. Thu, 06 Apr 2017 21:25:23 GMT jguerdat 2017-04-06T21:25:23Z https://community.arlo.com/t5/Arlo-Go/What-is-the-sim-card-usage-for/m-p/1261746#M463 <P>Hello, what exactly is the sim card used for? If i'm on WiFi why would I need it? Is it a back up if the WiFi is down or off line? Is there a charge from ATT if I activate it(ie Ipad). Thx</P> Thu, 06 Apr 2017 20:53:43 GMT https://community.arlo.com/t5/Arlo-Go/What-is-the-sim-card-usage-for/m-p/1261746#M463 Gellie 2017-04-06T20:53:43Z https://community.arlo.com/t5/Arlo-Go/What-is-the-sim-card-usage-for/m-p/1261764#M464 The SIM card is only for the Arlo Go, which uses cell service for the Internet access. No other Arlo camera uses a SIM card. Thu, 06 Apr 2017 21:25:23 GMT https://community.arlo.com/t5/Arlo-Go/What-is-the-sim-card-usage-for/m-p/1261764#M464 jguerdat 2017-04-06T21:25:23Z https://community.arlo.com/t5/Arlo-Go/What-is-the-sim-card-usage-for/m-p/1261768#M465 <P>thx!</P> Thu, 06 Apr 2017 21:30:18 GMT https://community.arlo.com/t5/Arlo-Go/What-is-the-sim-card-usage-for/m-p/1261768#M465 Gellie 2017-04-06T21:30:18Z https://community.arlo.com/t5/Arlo-Go/What-is-the-sim-card-usage-for/m-p/1283073#M583 Does that pro support wi-fi too or is it ONLY 3G/4G cell service? For example can we have the wi-fi as a backup or vice versa? Sat, 13 May 2017 17:31:33 GMT https://community.arlo.com/t5/Arlo-Go/What-is-the-sim-card-usage-for/m-p/1283073#M583 AZArloUser 2017-05-13T17:31:33Z https://community.arlo.com/t5/Arlo-Go/What-is-the-sim-card-usage-for/m-p/1283081#M584 Only cell service, now available via AT&amp;T and Verizon. Sat, 13 May 2017 17:45:39 GMT https://community.arlo.com/t5/Arlo-Go/What-is-the-sim-card-usage-for/m-p/1283081#M584 jguerdat 2017-05-13T17:45:39Z