# Bluetooth Low Energy won't connect to my Esp32 and app crashing on Android **URL:** \ **Category:** Questions about Thunkable X\ **Tags:** beginner, bluetooth\ **Created:** [December 7, 2020, 3:28pm UTC](https://community.thunkable.com/t/bluetooth-low-energy-wont-connect-to-my-esp32-and-app-crashing-on-android/1026566 "2020-12-07T15:28:12Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![melodyapril](https://avatars.discourse-cdn.com/v4/letter/m/e480ec/32.png) [@melodyapril](https://community.thunkable.com/u/melodyapril)\ **Post date:** [December 7, 2020, 3:28pm UTC](https://community.thunkable.com/t/bluetooth-low-energy-wont-connect-to-my-esp32-and-app-crashing-on-android/1026566/1 "2020-12-07T15:28:12Z")
Hi guys, having some problems with making my App work with BLE… Followed a youtube tutorial but it doesn’t seem to work for neither my iPhone or Android devices. ![Screenshot_46](https://us1.discourse-cdn.com/flex015/uploads/thunkable/original/3X/9/e/9e55069c96dc7363d1f30d8c55faa802cc5139e7.png) ---
**Author:** ![eddie.rebehy](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/eddie.rebehy/32/67993_2.png) [@eddie.rebehy](https://community.thunkable.com/u/eddie.rebehy)\ **Post date:** [December 8, 2020, 1:36am UTC](https://community.thunkable.com/t/bluetooth-low-energy-wont-connect-to-my-esp32-and-app-crashing-on-android/1026566/2 "2020-12-08T01:36:32Z")
Device id should be the mac address. To connect with device name “My Esp32”, use Device name instead of Device ID in call to connect Device. ---
**Author:** ![ioannis](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/ioannis/32/146956_2.png) [@ioannis](https://community.thunkable.com/u/ioannis)\ **Post date:** [November 8, 2024, 12:19pm UTC](https://community.thunkable.com/t/bluetooth-low-energy-wont-connect-to-my-esp32-and-app-crashing-on-android/1026566/3 "2024-11-08T12:19:55Z")