LTE provides quicker data transfer or greater cellular rates. Even so, it wouldn't hurt to try switching to a lower network band for a few minutes to see if it helps with GPS troubles on the iPhone. Another option is to use this workaround. By turning off LTE and switching to other accessible network bands, some customers were able to address GPS difficulties. The following is how it works:
- Go to the Settings tab.
- Scroll down to Cellular and press it.
- Select Data Options.
- Tap Voice & Data.
- Select 3G from the given options