Hello,
I am setting up my RS3 receiver and I cannot activate the mobile data. I tried to use different sim cards but cannot activate the mobile data.
When I press the mobile data toggle, it remains gray. The APN settings are correct and all the sim cards that I tried are active. When I turn on the mobile data it quickly disconnects.
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Hi, @heron98105, welcome to the community!
First, to troubleshoot this, I’d like to share our support tip to check: How to provide Reach RS2+ with internet access via a SIM card.
Also:
- Did the SIM card work previously, or did it never work?
- Please try disconnecting Reach from the WiFi and see if it helps.
- Does the sim card use authorization? If yes, please fill up the correct username and password in Emlid Flow.
Let me know how it goes.
Hi,
I have reviewed the link you sent me before reaching out, and every other resource I could find on the internet regarding this issue.
The intended sim works in other devices and it has an APN, no password, and a static ip assigned to it.
The sim works in other devices and I also tried a couple of other sims for regular devices as well as service providers.
I have tried with reach disconnected from the wifi and no-go.
Help!!

I reached out to our technical contacts with ATT to do some live troubleshooting to see if the issue is on their end.
Here is the outcome of that work:
From ATT:
“I don’t see the SIM CARD attached to the network, and I don’t see any attempts to connect. They need to attached to the network first get a signal and the device can start the connection process with the APN name. We are two steps before the APN part.”
Following up with a brand new different SIM CARD that was then entered into the line of service’s profile along with the EMEI for the REACH and then place the same new SIM CARD into a different data only device and received this reply:
“I still do not see that SIM CARD even trying to attach to the network when in your customers survey equipment, I do see the SIM CARD when it is in “Device= Fleet Management GO8”. All indications are that the survey equipment radio has malfunctioned or is inactive within the software. Have your customer confirm software settings and retest.”
I am not seeing a disable - or enable setting for the radio in the software.
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@heron98105
Thank you for reaching out to the providers and providing the update.
Please share your country location and the SIM providers you have already tried to investigate this further.
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@heron98105
From our side, we don’t restrict anything. However, some providers have some restrictions or need certification.
We haven’t conducted local tests regarding which SIM card works in the US, but some of our users and dealers in the US successfully work with Google FI Wireless/EIOTCLUB/Twilio/SPECTRUM SIM cards. If the SIM card supports switching between several mobile operators, you may need to restrict it to 1 provider.
As a workaround, I suggest connecting the Reach with BLE. This way, the Reach will use the internet connection from the phone. I understand that this workaround might not be ideal if you prefer a dedicated SIM inside the Reach. Currently, We’re researching these certifications, but the process may take some time. However, I saved this thread on the task, so if there is an update, I’ll let you know!
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I worked my way through a number of providers but the only one that works well is Eiot Club. It sometimes briefly loses connection, which will require reconnection if you use FieldGenius. Get the three network card with some small amount of data to try it out then you can add as needed from there.
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