# DefaultDeviceProfiles.ini vs. BaseDeviceProfiles.ini confusion **URL:** \ **Category:** Debugging, Optimization, & Profiling\ **Tags:** Optimization, unreal-engine, Packaging, UE4-26, question\ **Created:** [May 3, 2022, 7:45am UTC](https://forums.unrealengine.com/t/defaultdeviceprofiles-ini-vs-basedeviceprofiles-ini-confusion/547362 "2022-05-03T07:45:59Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![herb64](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@herb64](https://forums.unrealengine.com/u/herb64)\ **Post date:** [May 3, 2022, 7:45am UTC](https://forums.unrealengine.com/t/defaultdeviceprofiles-ini-vs-basedeviceprofiles-ini-confusion/547362/1 "2022-05-03T07:45:59Z")
In the [Customizing Device Profiles](https://docs.unrealengine.com/5.0/en-US/customizing-device-profiles-and-scalability-in-unreal-engine-projects-for-android/) documentation, there are 4 profile configuration files shown in the image: ![ConfigPrecedence](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/2/28291885a8f57c8501e568bbb4c530ff37f82f67.jpeg) I created a _ **Base** _DeviceProfiles.ini in my project directory to experiment, but it did not work. Making it _ **Default** _DeviceProfiles.ini instead works. It is a little bit confusing. The Device Profile Editor “Save as Default” button also writes a DefaultDeviceProfiles.ini only (which is quite huge filled with a lot more content)… Is this just a bug in documentation or are there cases, where a _Base_DeviceProfiles.ini is needed in the project directory? ---
**Author:** ![micahpharoh](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@micahpharoh](https://forums.unrealengine.com/u/micahpharoh)\ **Post date:** [May 11, 2023, 2:35am UTC](https://forums.unrealengine.com/t/defaultdeviceprofiles-ini-vs-basedeviceprofiles-ini-confusion/547362/2 "2023-05-11T02:35:58Z")
Thank you for pointing this out! I kept changing BaseDeviceProfiles.ini without seeing any results.