# Safesky works well on ground but not in flight!

**URL:** <https://forum.safesky.app/t/safesky-works-well-on-ground-but-not-in-flight/1869>\
**Category:** English\
**Created:** [November 12, 2024, 1:19pm UTC](https://forum.safesky.app/t/safesky-works-well-on-ground-but-not-in-flight/1869 "2024-11-12T13:19:49Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![COS](https://avatars.discourse-cdn.com/v4/letter/c/34f0e0/32.png) [@COS](https://forum.safesky.app/u/COS)\
**Post date:** [November 12, 2024, 1:19pm UTC](https://forum.safesky.app/t/safesky-works-well-on-ground-but-not-in-flight/1869/1 "2024-11-12T13:19:50Z")

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Hit there,  
I was finishing the setup (incl. HEX-adress and other stuff) and start testing safesky on a Android.  
On ground beneath the clubhouse and in front of our hangars, safesky shows a lot of trafic on ground and in the air. once take of, there are 0! message about trafic. The display left completely empty of trafic, exept my own.  
I use a SIM-Card in this Android 10, build 53.1.A.3.105. This was the case for both of two flights (please check the history of my plane I configured). During the 2nd flight, the sky was full of trafic. We have excellent reception for data com. over 4G and LTE here.  
The phone showed well a valid IP4 adress as well as a valid IP6 Adr.  
I have used a SIM-Card with unlimited data volume for my country.  
BUT: Within this second SIMcard (destinated for tablets and machine communication) there is no POTS- calls possibility. If you are using the phone number or a phone identity, it will goes wrong.

As you neither exept special conditions for the wireless conection nor spefied minimum configuration for this app, I cannot see this as the reason for.

If this is not going to work, I will unsuscribe and go for a classic FLARM Fusion solution next year, instead of a subscription to your solution.

Please check this

COS