I paid to get 3 Go in US during my trip but it doesn’t work. It says “5G” and does not connect

[softech]

@erombaux 

Critical part to US roaming depends on T-Mobile/AT&T coverage and whether you can connect successfully onto either network.

If the phone is not connecting to T-Mobile/AT&T, change the Network Connection from Automatic to Manual and select and test both T-Mobile and AT&T and see which one you can connect.

If your issue is with data, make sure your Roaming Mobile data is enabled and you have disabled your mobile data limiter.  Also change your network mode to 4G (and don't try 5G until you can connect and works on 4G)

If your issue is with voice, make sure VoLTE is enabled on the device setting.  And if it does not work, try to change the Network to T-Mobile ONLY, and change  Preferred Network Type or Network Mode to 2G and see if the calls go through.
Also, you can download VoIP app TextNow as a workaround to make calls and text if you have Wifi or if your roaming has data component and data  is working

[hTideGnow]

hi @erombaux 

dont use 5G, 5G in roaming could be an issue

Change your network type to 4G and try connect to T-Mobile first.  If does not work, try AT&T

[JRod]

@erombaux 

Am I correct in thinking that you purchased 3GB of roaming data? 

In order for that to work while you are in the US you need to have data roaming turned on. Your data should work on T-Mobile or AT&T as long as you have data roaming on. You can try to put your voice and data settings to 4G to work with AT&T if it doesn’t work right away.

If you purchased talk features also then AT&T should work if you have a VoLTE enabled phone but if your device isn’t VoLTE roaming enabled by PM then you’ll have to manually connect to T-Mobile. If it doesn’t work immediately with T-Mobile you’ll have to switch your voice and data settings to 2G GSM 

[DennyCrane]

Change your Preferred Network to 4G/LTE on your phone in your network settings. There is a known problem with AT&T 5G. Otherwise try to manually connect to T-Mobile.