Yes. A common workflow is to use your smartphone as a GPS logger, then later match the recorded track to your photos by timestamp and write the coordinates into the EXIF data.

From the answers, Android apps such as OSMAnd can record GPS traces, and photo software can then use that track to geotag your images. Another option, if you still have a GPS-capable Canon body, is to let that camera record a GPS log and use Canon software to apply the data afterward.

The key things to watch are:

• Make sure the GPS track is saved in a format your geotagging software can read.
• Make sure your camera clock is correct.
• Even better, photograph the GPS app/device screen showing the time so you can measure any clock offset and correct it when matching the track to the photos.

This phone-plus-software method is a practical alternative to an external camera GPS unit and can save camera battery compared with leaving GPS running in-camera.