[SOLVED] Sara fails to connect

One month ago my SARA connected without problems to T-Mobile and AllThingsTalk.
Today I powered the same SARA board and it failed to connect.
When running trought the tutorial at http://support.sodaq.com/sodaq-one/at/ I do not successfully pass command “AT+CGATT?”. It always returns: “+CGATT: 0” e.g. connection failed.

While studying varoius examples I found that a new connect string was used.
The one I used was:

if (nbiot.connect(“oceanconnect.t-mobile.nl”, “”, “20416”))

While the other one I found is:

if (nbiot.connect(“cdp.iot.t-mobile.nl”, “”, “20416”))

My questions are:

  • Is there a way to verify if my SIM is operational?
  • was there a change in conect method?
  • has anyone experienced the same issue?
  • is there a solution?

Now I have a aplication for my board this summer I would like to use it.
Thanks in advance.
Cu, Remko.

Dear Remco,

Can you send me your SIM number? We need to move it to the new Nokia Impact.
I hope all your other questions are answered here: http://support.sodaq.com/sodaq-one/t-mobile-nl/
Let me know if you have anything else :slight_smile:

Kind regards,

Hello Jan, i have the same problem as Remco…

How do i send my SIM number to you?

Kind regards

Ruud Oskam

Send a DM to @Jan on this forum with the information

Send me a DM or email to jan at sodaq dot com

Just to keep the thread up to date:

The early adopters have recieved an connection to the “old” Huawei’s OceanConnect platform.
On the 1st of May 2018 OceanConnect has been replaced by Nokia Impact.

I am currently in the process of migration and keep you posted.

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Small update.

Today T-Mobile moved all OceanConnect simcards to Nokia Impact.
So no need to email me your simnumbers anymore :slight_smile:

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Yesterday I got the confirmation that I was migrated.
A test today gave me: “Connected succesfully!” from my Sketch while using this pice of code and all other required changes:

// New connect string according to: http://support.sodaq.com/sodaq-one/t-mobile-nl/
if (nbiot.connect("cdp.iot.t-mobile.nl", "", "20416"))

Now lets continue with the stuggle to get my data out again.

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The past days happend the following:

  • I have received form T-Mobile the credentials to access the API trough Postman.
  • T-Mobile migrated my SIM to the new platform.

After numerous sending of commands using Postman I was able to send my data to the North-Application.

I conclude that documentation is poor (optimistic statement) if there is any.
Although I did not intend (yet) a T-Mobile installfest I was able to get my data out.


I am happy you were able to get your data out :slight_smile:
I agree that the documentation is a bit poor at this moment.

Did you know T-Mobile have a manual on their forum?

Do you have some feedback about the information sodaq needs to add?

Kind regards,