To troubleshoot slow internet speed on your phone, follow these steps:

1. Check your internet connection:
   Check if the slow speed is due to an unstable internet connection or is limited to your phone.
2. Update your phone’s software:
   Make sure that your phone is running on the latest system version.
3. Check for router/network issues:
   Make sure your router is set up correctly and running its latest firmware.
4. Reset your phone’s network settings:
   Reset your phone’s network settings, then reconnect to the Wi-Fi network.
5. Restart your phone:
   Restarting your phone could possibly fix minor issues causing slow internet speed.