MKR-NB-1500 will not find Telstra

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I am trying to get a MKRNB1500 modem to send an SMS

Almost every code in the example hangs on
if (nbAccess.begin(PINNUMBER) == NB_READY) { // A VERY common complaint on the forums but there is no solution.

I downloaded the M-Center software and SerialSARAPassthrough sketch

There is no operator found.
AT+COPS? comes back with Vodafone

Select Telstra by sending the following AT Command,

AT+COPS= 4,2,“50501”

It still can see Vodafone as an option and Telstra has never been available.

I purchased a Vodafone SIM and it still does not connect. It is sin the operator list but it will not take it.

Signal appears low too but the antenna works perfectly on other gear. I bought a new set to verify.

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Hi Dave,

Sorry to hear you are having trouble.

Telstra provides this guide to get started with the MKR NB 1500: https://dev.telstra.com/sites/default/files/assets/Arduino-MKR-NB-1500-Starter-Guide.pdf

It’s also possible that Vodaphone licenses the tower to Telstra, I came across this website that might help you

Keen to get this one working!
Liam

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Signal strength is crucial for establishing a connection. You can check the signal strength with the following AT command:
AT+CSQ
The response will be in the format +CSQ: <rssi>,<ber>. The <rssi> value should be between 10-31 for a good signal. Values below 10 indicate poor signal strength.

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from ebay
Modem Programming Fixture for Arduino MKR NB 1500

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Hi Dave,

Give the AT command @lia262073 recommended a go. If you can confirm it isn’t a signal strength issue that’s one more possibility crossed off.

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HI Dave,

It doesnt sound like you have to re-flash the LTE chip, have you had any luck with the examples above?

Liam