How do I know when is time to top up?

The best way is to check with your SIM’s network operator for accurate information. You may also check the approximate data usage through the Pawfit App so you know roughly when your data credit is going to run out. You can find your data usage at Profile -> your pet’s profile -> Advanced settings -> Device data usage. It is recommended that you reset the data usage when you top up your SIM, so you know roughly when is time to top up again.