LTE Modul Roaming
#1
hi, i use this headunit:

https://www.joyingauto.eu/8-inch-single-din-car-radio-upgrade-android-auto-4g-head-unit.html
EU-JY-UOS01N4GS-H

insert an german SIM, roaming in Menue is accepted, but no internet!

the SIM card work with roaming in an other device

Any solution?
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