Look for Version 2.0 or higher of Proximity Sensor and Screen by Steven Stanley Bayes.
Does not require neither root access nor any third party frames nor products. Tested with MotoE XT1023. Should work with all or most Android devices.
https://play.google.com/store/apps/details?id=stevenstanleybayes.proximitysensor&hl=en
OR
Go to Google Play Store with your device. Click " APPS ". Click the magnifying glass of
the search. Type exactly, character by character, :
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Proximity Sensor and Screen by Steven Stanley Bayes
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PLEASE, NOTE : MUST BE TYPED EXACTLY AS SHOWN, EXACTLY AT THE " APPS " TAB OF GOOGLE
PLAY STORE, BECAUSE THE SEARCH ENGINE OF GOOGLE PLAY STORE IS VERY SENSITIVE.
Click on the displayed app with the same name and author to download and install. The
application is also available in many other app stores and online which may or may not
show after a general purpose search with google.com and a web browser but some forums
where the links are posted may show.
READ THE INFORMATION INSIDE THE APPLICATION FIRST.