Force Verizon Galaxy S3 to CDMA Only

There are quite a few people searching for an old app that would force the S3 to CDMA only or maybe they are wanting a way to turn off 4g on an Android phone. In my case it was necessary because I had invested big $$ in a signal booster however it only handles the 800 MHz and 1900 MHz frequencies. Well guess what 4G uses, if you're with Verizon not those two frequencies.

The old app was named Phone Info and was in the Google Play store but has been removed/retired. After some search stumbling across a comment for this post which indicated there is a post here that explains the issue but it requires registration. However after registering it turns out it just refers to a Google Play store app.

Short answer, install the Battery Monitor Widget. Once installed click the Tests button on the bottom right, click the Device Info menu and Voilà scroll down and select under the 'Set preferred network type:' menu.