# Location sensor undefined **URL:** \ **Category:** Questions about Thunkable X\ **Created:** [September 21, 2021, 11:42am UTC](https://community.thunkable.com/t/location-sensor-undefined/1517835 "2021-09-21T11:42:23Z")\ **Posts on this page:** 3\ **Page:** 2
**Author:** ![team.eps.numeriqueg](https://avatars.discourse-cdn.com/v4/letter/t/5f8ce5/32.png) [@team.eps.numeriqueg](https://community.thunkable.com/u/team.eps.numeriqueg)\ **Post date:** [September 24, 2021, 9:12pm UTC](https://community.thunkable.com/t/location-sensor-undefined/1517835/22 "2021-09-24T21:12:58Z")
They have independent emails for precisely these students. And I do the installation with them but it doesn’t work. One of the phones (iOS) downloads but the app cannot open (an error message is displayed). The second phone does not install, it prevents the download and there is nothing to do it does not work. I do not understand. Iphone 10 Android Samsung (3-5 years release) ---
**Author:** ![tatiang](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/tatiang/32/55482_2.png) [@tatiang](https://community.thunkable.com/u/tatiang)\ **Post date:** [September 24, 2021, 10:08pm UTC](https://community.thunkable.com/t/location-sensor-undefined/1517835/23 "2021-09-24T22:08:53Z")
So just to confirm: each student is opening a **different** download link on each phone? What error message are you seeing? Is it the “something went wrong” message? That can be caused by certain things such as incorrect variable typing, accessing invalid data source rows, etc. ---
**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, 1:15pm UTC](https://community.thunkable.com/t/location-sensor-undefined/1517835/24 "2024-11-08T13:15:09Z")
Closed on November 8, 2024, 1:15pm UTC [Previous page](https://community.thunkable.com/t/location-sensor-undefined/1517835.md?page=1)