> For the complete documentation index, see [llms.txt](https://help.sipgate.de/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.sipgate.de/cloud-telefonanlage/en/using-sipgate/die-sipgate-app/welche-einstellungen-benotige-ich-fur-die-satellite-app.md).
# Which settings do I need for the satellite app?
This article lists all the conditions required for smooth use of the satellite app.
### 1. System requirements
#### Operating system
| Platform | Minimum version | Recommendation |
| -------- | ------------------------------- | -------------------------------- |
| iOS | 16.4 (CallKit integration) | iOS 18+ |
| Android | 6.0 (API Level 23, Marshmallow) | Current OS from the manufacturer |
| iPad | Compatibility mode | – |
#### Network
* Minimum connection: EDGE
* Recommendation: Wi‑Fi, 4G or 5G
* satellite runs exclusively over a data connection – regardless of SIM card and mobile operator
#### Unsupported devices and configurations
* Huawei without Google Services (HarmonyOS, AppGallery without GMS): not supported – only Google-compatible Huawei devices work
* VoIP clients such as Zoiper: for regulatory reasons, satellite cannot be used on third-party VoIP clients
* VPN that blocks UDP traffic or breaks SIP: leads to connection problems
***
### 2. Device-side settings (MDM / managed devices)
#### Android
* Exclude the app from battery optimization (mainly affects Samsung, Xiaomi, Huawei)
* For aggressive manufacturers (e.g., Xiaomi MIUI), grant additional background permissions if necessary
* Huawei: Only Google-compatible devices are supported – devices without Google Services (HarmonyOS, AppGallery without GMS) are not compatible
#### iOS
* Leave push notifications enabled in the system settings
* Minimum OS: iOS 16.4 (due to CallKit integration)
* Recommendation: iOS 18+
#### General
* Do not use a VPN that blocks UDP traffic or breaks SIP
* Disable SIP-ALG on firewalls and routers
* Minimum network: EDGE – optimal: Wi‑Fi, 4G/5G
***
### 3. Battery optimization and power-saving mode
Modern smartphones throttle or terminate background processes automatically to save battery. This directly affects reachability via satellite.
Typical symptoms: incoming calls do not ring even though the app is installed and logged in – especially after a long period of inactivity or when the battery is low.
#### Android – recommended settings
| Manufacturer | Setting | Path (example) |
| ------------- | ------------------------------------------------ | -------------------------------------------------------------------------- |
| Samsung | Disable battery optimization for satellite | Settings → Battery → Battery optimization → satellite → Don't optimize |
| Samsung | Allow background activity | Settings → Apps → satellite → Battery → Unrestricted |
| Xiaomi (MIUI) | Allow automatic start | Settings → Apps → Manage apps → satellite → Power saving → No restrictions |
| Huawei (EMUI) | Protected apps / Start manager | Settings → Battery → Start manager → enable satellite |
| All Android | Disable power-saving mode (or exclude satellite) | Settings → Battery → Power-saving mode |
\
> Important: Power-saving mode (often activated automatically when the battery is low) restricts push notifications and background activity system-wide. satellite should be explicitly exempted from this restriction.
#### iOS
* Background App Refresh must be enabled for satellite: Settings → General → Background App Refresh → satellite: On
* Low Power Mode disables Background App Refresh system-wide → satellite may no longer be reachable
***
### 4. Do Not Disturb (DND) and focus modes
Do Not Disturb (DND) is active by default on many devices – e.g., at night, during meetings, or as a permanent operating state on managed devices. This directly blocks incoming calls.
#### Android – DND
* Incoming calls are muted or not signaled at all
* satellite can be set as an exception in the DND settings: Settings → Sound → Do Not Disturb → Exceptions → Allow calls from certain apps
* On Samsung devices: Samsung-specific DND settings can override the Android defaults
#### iOS – Focus modes (DND, Work, Personal, etc.)
* iOS focus modes (since iOS 15) block all calls by default that are not defined as exceptions
* satellite must be explicitly entered as an allowed app in the active focus profiles: Settings → Focus → \[Profile] → Apps → add satellite
* Important for MDM environments (e.g., Jamf): satellite must be included in the allowlist of the distributed focus profiles
* the focus mode and DND (do not disturb) should, if possible, be disabled in order to use the satellite app without interruption
---
# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.
## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:
```
GET https://help.sipgate.de/cloud-telefonanlage/en/using-sipgate/die-sipgate-app/welche-einstellungen-benotige-ich-fur-die-satellite-app.md?ask=&goal=
```
`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.