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number not authorised

  • 25 January 2021
  • 1 reply

Hi I have 2 M2M sims in alarms when I text them to arm or disarm the alarms the text says failed operation phone number not authorised I have now put extra money on my plan and it works why does it do this as I have unlimited texts and calls

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1 reply

Userlevel 7
Badge +8

Hi @Dankensue,


What type of plan is it you have exactly? Also, what are the actual devices you’re using?



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