> For the complete documentation index, see [llms.txt](https://docs.premium-positioning.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.premium-positioning.com/guides/field-software-and-apps/qfield.md). # QField Set up QField on Android or iOS to receive RTK Premium corrections over NTRIP: caster settings and the steps to a fixed solution. These steps set up QField on Android or iOS to receive RTK Premium corrections over NTRIP from an external GNSS receiver. They assume you already have your NTRIP credentials. ### Before you start * Your NTRIP username and password, from your Premium Positioning welcome email or your account in the XYZ Platform. * No account yet? Start a [14-day free trial](https://www.premium-positioning.com/start-14-day-free-trial?utm_source=docs\&utm_medium=referral\&utm_campaign=docs\&utm_content=qfield) to get your credentials. * QField app. * A working internet connection on the controller or phone. * A clear view of the sky at the point you are measuring. ### Network settings These are the same for every Premium Positioning customer. Only your username and password are unique to you. * Server or host: rtkpremium.xyz * Port: 2101 * Mountpoint: COMMON * Protocol: NTRIP ### Steps 1. Have your NTRIP login ready: You'll need the per-customer NTRIP username and password from your welcome email. Enter YOUR OWN credentials at the NTRIP step - do not use anyone else's. The caster details (host, port, mountpoint) are the same for all customers. 2. Pair the GNSS receiver to your phone/tablet: Power on your external receiver (e.g. u-blox/ArduSimple or Emlid). Android: pair the receiver in system Bluetooth settings before opening QField. iOS: many receivers connect over Wi-Fi/TCP instead (e.g. via ArduSimple's WiFi NTRIP Master) - connect your device to the receiver's Wi-Fi. Pairing names vary by receiver. 3. Open Positioning settings in QField: Tap the GNSS/position button (top-left), then the gear/settings icon, and go to Settings > Positioning. The Positioning section is consistent across recent versions, though icon styling varies. 4. Add your external receiver as the position source: Add your receiver to the saved positioning devices: choose your paired Bluetooth receiver, or for a network/Wi-Fi receiver add a TCP/UDP connection (enter the receiver's IP and port - e.g. 192.168.4.1 for an ArduSimple WiFi NTRIP Master). Save it. 5. Activate the receiver: Toggle the switch next to your saved receiver to make it the active position source. QField should show a position from the external receiver rather than the phone GPS. 6. Open the NTRIP / correction-data settings: Next to the active device's toggle, tap its settings/gear button and open the NTRIP (RTK correction) configuration ('NTRIP Service information'). Note: depending on receiver and version, the NTRIP client runs inside QField or must be configured on the receiver itself (or its companion app/web page, e.g. a WiFi NTRIP Master at 192.168.4.1). If you don't see NTRIP fields in QField, configure them on the receiver - the same caster values apply. 7. Enter the caster host and port: Set host/server to rtkpremium.xyz and port to 2101. Labels are commonly 'Host'/'Address' and 'Port'; wording varies slightly by version but these map to the caster address and its port. 8. Enter YOUR NTRIP username and password: Enter the NTRIP credentials from your welcome email - unique to your account; the guide cannot supply them. 9. Select the mountpoint: Set the mountpoint to COMMON. If QField (or your receiver) offers a 'Get/refresh source table' option, the list populates once host/port/credentials are correct - pick COMMON; otherwise type it. Set protocol to NTRIP. Save/confirm. 10. Start the correction stream: On the device row, tap the arrow/connect control to start NTRIP. QField shows incoming and outgoing arrows when the stream works. If it won't connect, re-check host, port, the mountpoint spelling (COMMON), and your credentials. 11. Turn on the accuracy / position display: In Positioning settings enable 'Show position information' and the accuracy indicator. QField then shows a coloured quality dot on the GNSS button - red/yellow/green - plus a position panel with current accuracy and fix quality. 12. Confirm an RTK fix and cm-level accuracy: Wait in open sky for the solution to converge. You're done when the panel reports an RTK fixed solution and \~1 - 2 cm horizontal accuracy with the quality dot green. Exact fix-type wording varies by version/receiver, but green + cm accuracy confirms RTK works. ### If the fix will not hold QField needs internet (mobile data or Wi-Fi) to pull corrections. Behaviour varies by setup: on some receivers QField's own NTRIP client streams the corrections; on others (common on iOS, and with ArduSimple WiFi NTRIP Master) the NTRIP login is entered on the receiver or its companion app instead - the same caster values apply either way. Screen/button names differ between versions - match the nearest equivalent. For more, see [RTK corrections troubleshooting](/troubleshooting/rtk-corrections-troubleshooting.md) and [Inconsistent RTK accuracy on site](/troubleshooting/inconsistent-rtk-accuracy-on-site.md). ### FAQ Can QField receive RTK corrections? QField receives RTK corrections through an external GNSS receiver. Depending on the receiver, QField's own NTRIP client streams the corrections, or you enter the NTRIP login on the receiver or its companion app. What are the NTRIP settings for QField on RTK Premium? Use host rtkpremium.xyz, port 2101, mountpoint COMMON and protocol NTRIP, with the username and password from your welcome email. I cannot see NTRIP fields in QField. Where do I enter them? Enter them on the receiver or its companion app or web page, for example an ArduSimple WiFi NTRIP Master at 192.168.4.1. The same caster values apply. How do I know QField has an RTK fix? The position panel reports an RTK fixed solution, horizontal accuracy shows about 1 to 2 cm, and the quality dot on the GNSS button turns green. ### Need help Support runs on business days from 09:00 CET to 17:00 ET. Contact us at or +31 85 0606 338, and include your receiver model, the mountpoint, the solution status, and the correction age. Last updated: 10 October 2026