Aircard 754S error 27

[Pappajoe]

I bought an unlocked aircard from the USA. I'm living in South Africa. When I received it and I inserted my MTN-SA SIM it said connecting to net work and then gives an ERROR 27.
When I logged in on the PC at http://att.elevate I saw that it was set on Auto to select network.
On the drop down there are these options to choose from
Europe 3G
North America 2G
GSM ALL
Europe
North America
WCDMA ALL
LTE ALL

None of them gets me connected keeps on giving error 27.
Can someone please help???

[Pappajoe]

This is the info yhe DC Unlocker software gave me

Detecting modem :

selection :
manufacturer - SierraWireless
model - Auto detect (recommended)

Found Applications port COM30
Found Diagnostics port COM27

Found modem : AC754S
Model : AirCard AC754S
IMEI : XXXXXXXXXXXXXXX
Serial NR. : XXXXXXXXXXXXXXX
Firmware : SWI9200H_03.05.09.06AP
Voice feature : unknown(read failed)
SIM Lock status : unlocked

[Vincentas]

I bought an unlocked aircard from the USA. I'm living in South Africa. When I received it and I inserted my MTN-SA SIM it said connecting to net work and then gives an ERROR 27.
When I logged in on the PC at http://att.elevate I saw that it was set on Auto to select network.
On the drop down there are these options to choose from
Europe 3G
North America 2G
GSM ALL
Europe
North America
WCDMA ALL
LTE ALL

None of them gets me connected keeps on giving error 27.
Can someone please help???

You may receive this error because incorrect or no connection settings for new provider are entered. You should check the settings - apn, username and others.

[Pappajoe]

You may receive this error because incorrect or no connection settings for new provider are entered. You should check the settings - apn, username and others.

Thank you Vincentas I think it was still setup for AT&T.
Ichecked my settings on my modem did the changes at it works 100%.
Thanks a lot for the help and keep up the good service.