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This presents a problem to the good Samaritan who finds it. They don’t know to whom the phone should be returned.
Sure, you could call the phone and hope they answer, or try using the ‘find my phone feature’, but that takes time and a positive result is iffy.
Solution…
Give the finder a helpful clue as to who you are. Customize your background wallpaper to include some information about you.
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If your email address also contains a company URL they might be close enough to drop the phone off at the reception desk for you.
Adding an alternate phone number where you can be reached, or adding the old enticing phrase, Reward if Found, are additional options.
It is easy to change wallpapers on smartphones. Just google “[your smartphone manufacturer] change wallpaper” and the directions will pop up.
Creating a customized wallpaper is almost as easy. You can do it with any photoshop type app, or by using a free on-line service.
Resources…
https://mashable.com/2013/08/12/wallpaper-iphone/
https://datarecovery.wondershare.com/best-iphone-wallpaper-maker.html
https://www.makeuseof.com/tag/make-custom-wallpaper-android/
https://www.picmonkey.com/blog/make-your-own-phone-wallpaper
https://www.canva.com/create/wallpapers/
https://spark.adobe.com/make/background-maker/