There's no option to clear the chat history. You may only Log Out / Log In from the app and the messages from individual chats will disappear. However all the group chat history will remain.
Locations displayed and reported by phone/devices are dependent on GPS and location data reported by the surrounding Wifi networks. There may be occasional location drift experienced given the crowded Wifi networks in Singapore.
Singtel mobile customers may log in with the new number using the current OnePass password. Non-Singtel customers need to create a new OnePass ID for the new OnePass account.
You may uninstall the app and your Singtel Connected Things account will be deleted automatically after 6 months. Alternatively, you may send in a request via Settings>Send Feedback.
To turn Notifications on, go to device Settings > Singtel Connected Things > Notifications > turn on the Allow Notifications option and then relaunch the application.
For issues related to the app, the customer may log a feedback using the "In-app Feedback/Report a bug feature". For issues related to the devices, you may call 1688 for help.