Troubleshooting:

• When SIM card is inserted in your XP5, APN settings are directly installed on your
  phone. If APN settings are not configured, you cannot access mobile internet on
  your phone.

• To setup internet Menually on your Sonim XP5, follow below procedure.
•
• From Menu > Settings > Select More, Select mobile networks > Access Point
  names > press right key > new APN > add an APN.

• Get your networks APN details by contacting your network operator.
•
• Enter your Network name, APN and Port options and right click select save.
•
• If you still having issues setting mobile internet on you XP5, contact Sonim
  support with your APN settings.
 

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