Very slow commection

[Godsdragon1]

download speed test1  10.6 mbps, upload 6.52 mbps (no router)

please help me troubleshoot and find out why phone internet is so slow! 
when I use router, download speed is 226 mbps, upload is 11.7 mps

thank you!

iPhone 11

[vzw_customer_support]

We know it's important to have the best service available to you. What is the make and model of your device? What troubleshooting steps have you tried so far?*Rebecca