"In the registry you can see another APN that Emify (EM) that makes the change of SIM to see if it was her problem but did not connect."
Not sure about what are you talking. From provided log - device all the time was connected to same operator. When modem initialization was done.
From log we can also see that device keeps restarting modem (due to not being able to connect to GPRS operator):
[2019.01.15 21:36:11]-[NETWORK] WARNING @ 2695:[CLEAR.ERROR.CNT.2686] Error count: 10 cleared
[2019.01.15 21:36:11]-[MODEM.ACTION] Modem restart handler begin
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apn used in the log was always the same: Line 1118: [2019.01.15 21:37:44]-[NETWORK] attempting to create pdp params. apn: postm2m.lu, len: 10
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"Could it be that they connect to Roaming and do not give access?
Yes device is in roaming.
network status:
[MODEM.STATUS]
CCID : 89883030000007232942
IMSI : 295050900162246
Data Link : 0/0/0/0/0/0
GPRS Status : 0
Phone Status: 0
PIN Attemts : 3,3
GSM Operator: 73003
Bat. Charge : 5
GSM Signal : 5
Service : 1
New Message : 0
Roaming : 1
SMS Full : 0
Voice Call : 0
LAC : 1316
Cell ID : 35285
CFUN : 1
CSQ (rssi) : 31
[0]SIM detected: 1
Network Type: 1/2G
So these sims do not have gprs access @ 73003 operator @ roaming then?
Regards