Apps like Display Tester Pro Unlocker

Here are some great alternatives to Display Tester Pro Unlocker by Brain_trapp :
Screen Test
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Android Phone Tester– Android
Android Phone Tester– Android
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Screen Test Pro
Screen Test Pro
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Backlight Bleed Test
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Android Faker Pro - Unlocker
Android Faker Pro - Unlocker
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Launcher OS™ Pro
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Battery Meter Overlay
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Screen Checker
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Hermit Premium — Unlocker
Hermit Premium — Unlocker
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Inure Full Version Unlocker
Inure Full Version Unlocker
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Multi-touch Tester
Multi-touch Tester
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