DECIRT · HELP
DecirT help centre
Interactive guides to troubleshoot issues, improve your WiFi and choose the services that suit you.
No internet connection
Safe first checks without opening equipment or touching fibre.
Read guideMy WiFi is slow
Find out whether the issue is your line, WiFi or device.
Read guideImprove WiFi coverage
Practical advice for distant rooms and multi-storey homes.
Read guideRouter and network security
Protect your home connection.
Read guideBasic network maintenance
Safe preventative checks and cleaning.
Read guideWhich fibre speed do I need?
Compare 300, 600 and 1,000 Mbps.
Read guideHow much mobile data do I need?
Choose based on actual usage.
Read guideWhat is eSIM and how do I activate it?
A digital SIM requires a compatible device and carrier.
Read guideRoaming and data abroad
Know the difference between roaming and international calls.
Read guideTelecom consumer rights
Number portability, contracts, service quality and complaints.
Read guideInteractive tools
Connection troubleshooting
Choose a symptom to start with the right check.
Fibre speed guide
Large downloads or intensive simultaneous use?
Suggested speed
300 Mb
A guide only; this does not measure your line or guarantee speed. Check coverage and price.
Mobile data guide
Plan to compare
DecirT Móvil 30
6,90 € / mes · 3 meses · 7,90 € / mes después (IVA incluido)
Real usage and roaming vary; check the last three months.
Roaming · Language
Roam Like at Home applies, subject to fair-use and possible data allowances. Check your plan.
Reviewed November 2026; network terms and regulations can change.
Official sourcesTranslations and legal guidance require a final specialist review before public launch. Reviewed November 2026; network terms and regulations can change.