> For the complete documentation index, see [llms.txt](https://help.sipgate.de/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.sipgate.de/cloud-telefonanlage/en/using-sipgate/mobilfunk/apn-konfiguration-fehler-und-loesungen.md).
# APN configuration errors and solutions
The following article contains the most common error messages for APN configuration when setting up mobile internet access on smartphones.
#### iPhone
Mobile data network could not be activated. PDP authentication error
**Cause:** No data package has been booked. Without a data package, data transmission does not work.\
\&#xNAN;***Solution:*** Book a sipgate data package for the smartphone. In the article [**How do I book new data volume and data snacks?**](https://help.sipgate.de/hc/de/articles/4407465302801-Wie-buche-ich-neues-Datenvolumen-und-Datensnacks) you will find helpful information and instructions.
Data connection works in Germany, but not abroad (iPhone)
***Solution:*** Change the APN settings manually to sipgate, if necessary after each iOS update. Further information can be found in the article [**How do I set up internet access on my mobile device?**](https://help.sipgate.de/hc/de/articles/4413852395281-Wie-richte-ich-den-Internetzugang-auf-meinem-mobilen-Endger%C3%A4t-ein)[.](https://help.sipgate.de/hc/de/articles/4413852395281-Wie-richte-ich-den-Internetzugang-auf-meinem-mobilen-Endger%C3%A4t-ein)
Data connection works in Germany, but not in the EU (iPhone)
**Cause 1:** 2G is set on the smartphone, but only 3G/LTE is available at the location\
**Solution 1:** Activate 3G or LTE as the connection type on the smartphone\
**Cause 2:** Airplane mode is activated on the smartphone\
**Solution 2:** Deactivate airplane mode on the smartphone\
**Cause 3:** The phone does not notice the EU<-->DE network switch and does not send a new registration\
**Solution 3:** Airplane mode: on/off, restart the phone
#### Android
Connection error (Android)
**Cause:** Entries differ from the template\
**Solution:** Compare your entries with the template from the article [**How do I set up internet access on my mobile device?**](https://help.sipgate.de/hc/de/articles/4413852395281-Wie-richte-ich-den-Internetzugang-auf-meinem-mobilen-Endger%C3%A4t-ein) to complete.
Data connection works in Germany, but not in the EU (Android)
**Cause 1:** 2G is set on the smartphone, but only 3G/LTE is available at the location\
**Solution 1:** Activate 3G or LTE as the connection type on the smartphone\
**Cause 2:** Your smartphone can only do 2G; only 3G or LTE is available at the location\
**Solution 2:** Change location or use another phone with 3G / LTE\
**Cause 3:** The DUAL SIM Slot 2 can only do 2G; no 2G is available at the location (usually abroad)\
**Solution 3:** SIM Slot 1 can/may use 3G, insert the sipgate SIM in Slot 1\
**Cause 4:** Airplane mode is activated on the smartphone\
**Solution 4:** Deactivate airplane mode on the smartphone\
**Cause 5:** The phone does not notice the EU<-->DE network switch and does not send a new registration\
**Solution 5:** Airplane mode: on/off, restart the smartphone
#### Blackberry
Data connection works in Germany, but not in the EU (Blackberry)
**Cause 1**: 2G is set on the smartphone, but only 3G/LTE is available at the location\
**Solution 1:** Activate 3G or LTE as the connection type on the smartphone\
**Cause 2:** airplane mode is activated on the smartphone\
**Solution 2:** deactivate airplane mode on the smartphone\
**Cause 3:** The phone does not notice the EU<-->DE network switch and does not send a new registration\
**Solution 3:** Airplane mode: on/off, restart the phone
#### Windows Phone 8
Data connection works in Germany, but not in the EU (Windows Phone 8)
**Cause 1:** 2G is set on the smartphone, but only 3G/LTE is available at the location\
**Solution 1:** Activate 3G or LTE as the connection type on the smartphone\
**Cause 2:** Airplane mode is activated on the smartphone\
**Solution 2:** Deactivate airplane mode on the smartphone\
**Cause 3:** The phone does not notice the EU<-->DE network switch and does not send a new registration\
**Solution 3:** Airplane mode: on/off, restart the phone
#### Windows Phone 10
Data connection works in Germany, but not in the EU (Windows Phone 10)
**Cause 1:** 2G is set on the smartphone, but only 3G/LTE is available at the location\
**Solution 1:** Activate 3G or LTE as the connection type on the smartphone\
**Cause 2:** Airplane mode is activated on the smartphone\
**Solution 2:** Deactivate airplane mode on the smartphone\
**Cause 3:** The phone does not notice the EU<-->DE network switch and does not send a new registration\
**Solution 3:** Airplane mode: on/off, restart the smartphone
#### Symbian Phone
Data connection works in Germany, but not in the EU (Symbian Phone)
**Cause 1:** 2G is set on the smartphone, but only 3G/LTE is available at the location\
**Solution 1:** Activate 3G or LTE as the connection type on the smartphone\
**Cause 2:** Airplane mode is activated on the smartphone\
**Solution 2:** Deactivate airplane mode on the smartphone\
**Cause 3:** The phone does not notice the EU<-->DE network switch and does not send a new registration\
**Solution 3:** Airplane mode: on/off, restart the smartphone
#### Fritz!Box
*Check error: Fritz!Box ➔ Settings ➔ System ➔ Events*
No LTE network was found within range.
**Cause:** No LTE network is available at the location\
**Solution:** Wait; the Fritz!Box may find an LTE/UMTS network a few minutes later
LTE connection is established and disconnects after a certain time
***Analysis:** Fritz!Box ➔ Internet ➔ LTE Information ➔ Mobile network ➔ check RSRQ*\
**Cause:** LTE reception is worse -20 to -99 RSRQ, the LTE mast kicks the Fritz!Box off\
**Solution 1:** Change the location of the Fritz!Box and check where the values get better: -1 to -19 RSRQ\
**Solution 2:** Fritz!Box ➔ Internet ➔ LTE Information ➔ Reception ➔ Start alignment aid ➔ change the antenna angle and make sure the values get smaller e.g.: -99 dBm instead of -150 dBm\
**Solution 3:** test stronger antennas on the Fritz!Box if the mast is more than 5-10 km away
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