Hello,
I'm using your TANGO network in roaming and unfortunately I cannot do phone calls or receive/send SMSs.
The problem is that I'm registered in your 4G network so I can use my internet connection but as soon as I try to make a phone call (the system switch to 2G/3G) it says that I'm not connected to the network. Of course in places without 4G coverage I cannot even use the internet.
Is it possible that an foreign number in roaming is registered in your 4G network but not in the 2G/3G ones? This is what's happening and my company does not believe it and don't want to call you to confirm that this is the problem. They insist on changing the APN parameters which have nothing to do with the calls or SMS.
As a result I don't have mobile phone services while I'm in Luxembourg.
Thanks.
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