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Cannot connect to LTE after trying to disconnect/reconnect 30 times

Hello,

I came across a very consistent bug that occurs on the nRF9160DK and a custom board with an nRF9160.

Basically, if you try to send the AT commands "AT+CFUN=1" and "AT+CFUN=4" 30 times, it cannot establish a registered LTE connection and searches perpetually. Before the 30th time, it is able to register a connection properly:

But after the 30th time:

You have to reset the board for it to work again.

Does anyone have an idea to why this happens? And why 30 times?

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