Can I use a SIM card adapter in the Truma iNet Box?
Do not use a SIM card adapter. Because of the different material thicknesses of the different adapters, you may be able to insert the adapter into the iNet Box but cannot get it out again.
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If you have a question about an appliance, always have information about the appliance type, year of manufacture and factory number at hand. You'll find this on the type plate on the appliance.