Chapter 13 Troubleshooting
NR7101 User’s Guide
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4 If this does not work, you have to reset the device to its factory defaults. To reset your Zyxel Device use
the LCD touch screen to go to Settings > Restore Default and then select Restore.
13.4 Internet Access
I cannot access the Internet through a 3G/4G/5G wireless WAN connection.
1 Make sure you insert a SIM card into the card slot before turning on the Zyxel Device.
2 If your SIM card has a PIN code, connect to the Web Configurator (http://192.168.225.1) using the user
name (Default: admin) and password (Default: admin) to unlock your SIM card.
3 Make sure your mobile access information (such as APN) is entered correctly. You can check this in the
Web Configurator (http://192.168.225.1). The APN fields are case-sensitive, so make sure [Caps Lock] is
not on. Check with your service provider for the correct APN if you do not have it.
4 Make sure your SIM card’s account is valid and has an active data plan. Check your service contract or
contact your service provider directly.
5 Make sure your data plan has not reached its limit.
6 If you are using a pre-paid SIM card, insert the SIM card on another mobile device to check if the SIM
card still works. If the SIM card works without any problems on another mobile device, contact the
vendor. Otherwise, contact your service provider.
7 Make sure you are in the ISP’s coverage area.
8 If the problem continues, contact your ISP.
I cannot access the Internet anymore. I had access to the Internet (with the Zyxel Device), but my
Internet connection is not available anymore.
1 Reboot the Zyxel Device.
2 Make sure the Zyxel Device’s WiFi network is enabled. You can enable Zyxel Device’s WiFi network on
the LCD.
3 Make sure your SIM card’s mobile data is enabled. Check this in the Web Configurator. (Section 7.5 on
page 68).
4 If you have set a data limit, make sure you have not reached it yet. Check your data left in the Web
Configurator.
5 If the problem continues, contact your ISP.
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